Andorra Mobiland
United Arab Emirates Etisalat DU
Afghanistan Afghan Wireless Etisalat MTN Roshan
Antigua and Barbuda APUA Digicel Lime
Anguilla Digicel Lime
Albania AMC Eagle Mobile Plus Vodafone
Armenia Beeline Karabakh Telecom MTS Orange
Angola Movicel Unitel
Argentina Claro Movistar Personal
American Samoa Blue Sky Communications
Austria A1 Hutchison 3 Orange T-Mobile
Australia Hutchison 3 Norfolk Telecom Telstra Virgin Mobile Vodafone Yes Optus
Aruba Digicel Setar
Azerbaijan Azercell Bakcell Nar Mobile
Barbados Digicel Lime
Bangladesh Airtel Banglalink Grameenphone Robi Tele Talk
Belgium Mobistar Telenet
Bulgaria GLOBUL MTel
Bahrain BaTelCo Viva Zain
Bolivia, Plurinational State of Tigo
Brazil Brasil Telecom Claro Ctbc Cellular Oi Sercomtel TIM Vivo
Bahamas BaTelCo
Botswana Orange
Belarus Life MTS Velcom
Canada Bell Fido MTS Rogers SaskTel Telus Virgin Mobile
Central African Republic Orange
Switzerland Orange Sunrise Swisscom
Chile Claro Entel PCS TMC
Cameroon Orange
China China Unicom
Colombia Comcel Movistar Tigo
Costa Rica ICE
Cyprus KKTCell
Czech Republic O2 T-Mobile Vodafone
Germany E-Plus O2 T-Mobile Vodafone
Denmark 3 DK Call me TDC Telenor Telia
Dominica Lime
Dominican Republic Claro Orange
Algeria Djezzy Mobilis Nedjma
Ecuador Claro Movistar
Estonia EMT
Egypt Etisalat Mobinil Vodafone
Spain Movistar Orange Vodafone Yoigo
Finland Sonera DNA Elisa
France Bouygues Telecom Orange SFR Virgin Mobile
United Kingdom Hutchison 3 O2 Orange T-Mobile Tesco Mobile Virgin Mobile Vodafone Vodafone
Grenada Lime
Guinea Orange
Greece Cosmote Vodafone Wind
Guatemala Claro Movistar Tigo
Guam GTA
Hong Kong Three 3 1010 one2free SmarTone-Vodafone
Honduras Claro Tigo
Croatia T-Mobile VIPNet
Hungary T-Mobile Vodafone
Indonesia Telkomsel XL
Ireland eMobile Hutchison 3 Just Mobile Meteor O2 Postfone Tesco Mobile Vodafone
Israel Cellcom Orange Pelephone
India Aircel Airtel
Italy Three 3 TIM Vodafone
Jamaica Orange Zain
Japan SoftBank
Kenya Orange
Saint Kitts and Nevis Lime
Korea, Republic of (South Korea) olleh SK Telecom
Kuwait Viva Zain
Cayman Islands Lime
Saint Lucia Lime
Liechtenstein Orange Swisscom
Lithuania Omnitel
Luxembourg Orange LUXGSM Tango
Latvia LMT
Morocco Meditel
Moldova, Republic of Orange
Montenegro T-Mobile
Madagascar Orange
Macedonia, the former Yugoslav Republic of T-Mobile
Mali Orange
Macao Three 3 CTM SmarTone
Montserrat Lime
Malta Vodafone
Mauritius Orange
Mexico Movistar Telcel Iusacell
Malaysia Celcom DiGi Maxis
Niger Orange
Nicaragua Claro Movistar
Netherlands KPN T-Mobile Telfort Vodafone
Norway Netcom Network Norway Telenor Tele2
New Zealand Vodafone
Panama Claro Movistar
Peru Claro TM SAC
Philippines Globe
Poland Era Orange Play Plus T-Mobile
Portugal Optimus Vodafone TMN
Paraguay CTI Movil Tigo
Qatar Vodafone
Reunion Orange SFR
Romania Cosmote Digimobil Orange Vodafone
Russian Federation Beeline MTS
Saudi Arabia Mobily STC Saudi
Sweden Hutchison 3 Tele2 Telenor Telia
Singapore SingTel M1 StarHub
Slovenia Si.mobile
Slovakia Orange T-Mobile
Senegal Orange
El Salvador Claro Movistar Tigo
Turks and Caicos Islands Lime
Thailand AIS dtac TrueMove
Tunisia Orange
Turkey Avea TurkCell Vodafone
Trinidad and Tobago TSTT
Taiwan, Province of China Chunghwa Telecom FarEasTone Taiwan Mobile
Uganda Orange
United States AT&T Verizon T-Mobile
Uruguay CTI Movil Movistar
Saint Vincent and the Grenadines Lime
Venezuela, Bolivarian Republic of Digitel Movistar
Virgin Islands, British Lime
Viet Nam Viettel VinaPhone
South Africa Vodacom MTN
 |
Monday, July 18, 2011
Wednesday, May 11, 2011
How To Handle Water Damage Mobiles
Ever dropped your cell phone in the sink,? Did you ever leave it in your pocket and run it through the washer? It usually means you have to replace your phone, but sometimes if you're fast you can save the phone.
1. Remove the Battery. This is one of the most important steps. Don't take time to think about it, electricity and water do not mix. Cutting power to your phone is a crucial first step in saving it.
2. Dry your Phone. Obviously you need to remove as much of the water as soon as you can to prevent it from getting into the phone. Use a towel or a paper towel to remove as much of the water as possible.
3. Soak in Alcohol. Alcohol is hygroscopic (attracts water), it will dissolve all the water in the phone, which will then pour out of the phone with the alcohol. Any remaining alcohol will evaporate. Alcohol will not harm your phone but may mess up glue (from stickers and the like). Use 95% alcohol, not the regular 70% rubbing type. Do it outside!. If you use alcohol, do not follow the rest of the advice here, instead leave your phone outside for a day or two to dry.
4. Allow the phone to dry. Since you do not want to ruin your phone or lose all the numbers in your phone book, you need to allow the phone to dry. Don't try putting the battery back on to see if it works as this would risk damaging the phone with a short circuit. Leaving your phone in a bowl of dry rice will help to expedite moisture evaporation.
5. Heat your Phone. Apply enough heat to your phone to cause the water to evaporate without waterlogging your digital screen. One of the best things you can do to save a cell phone is to set it on the back of your computer monitor or TV screen over the heat vents. This is usually the perfect amount of heat to fix your phone. The convection action of the heat vents will help carry away the moisture in your phone. Leave the phone on the heat for at least 2-3 days. Another option is to leave it overnight in the oven on warm (make sure to take off the battery first).
6. Test your Phone. After you have waited 3 days, make sure everything is clean and dry looking and re-attach the battery to the phone and see if it works. If your phone does not work repeat step 4. If it still won't work, try taking your cell phone to an authorized dealer. Sometimes they can fix it.
Tips :
§ Don't put the battery on for at least 3 days or longer if your digital screen is foggy.
Place a piece of satin finish scotch tape over your water damage sticker before you drop your cell phone in the water to prevent the water damage sticker from voiding your warranty. This sticker can usually be found under your battery. It's a small round white sticker, possibly with dots on it. If this sticker gets wet it changes color and your phone is marked for water damage.
§ Remove the tape if you ever have to return your phone for repairs or warranty. (See the note in the 'Warnings' section about doing this!)
§ The best way to dry out your phone is to place it in front of an air conditioner or air conditioning vent. Cold air won't damage your phone (hot air can warp or in extreme cases even melt plastic), and air from an air conditioner is dry, and so will evaporate water faster than you might think (which is why a car air conditioner will de-mist the windshield so effectively, even if the engine hasn't warmed up yet). Warm air from a reverse-cycle air conditioner works even better, of course. If you dry your phone in this way overnight it should be fine by the morning.
§ Use a hairdryer set on warm; it won't melt your head so your phone should be safe.
§ Use a food dehydrator.
§ Use the oven on the warm setting (make sure to take out the battery)
Warnings :
§ Don't heat the battery or it could leak acid. If you use an oven or hairdryer, make sure to remove the battery first.
§ If you use alcohol make sure to do so outside, and do not apply heat in any form, not even the gentle heat of a monitor. Do not hook up the bettery till the alcohol smell dissipates.
§ Do not apply heat to your phone other than mentioned above. You don't want to melt or burn your phone.
§ Warranty fraud is naughty! If you dropped your phone in the can with your other 'droppings'--are you really going to send it in for a warranty tech to have to open? Yuck!
§ FYI, Most modern phones have more than one liquid damage indicator on them, only one visible to you (and sales/technician agents), and chances are, if the sticker under the battery is triggered (or would be, with the scotch tape trick), then the odds are that the internal stickers you can't access are tripped as well.
§ This will still result in you paying a voided-warranty fee in the long run, and it may be best to just learn from your mistake (and not make it more financially severe!).
§ Even if all these steps are followed, minerals dissolved in the water can recipitate on solder and component pins, causing corrosion or shorting. Components pins are packed so closely together in a modern cell phone that even a small encrustation can create a short, rendering the phone inoperable
1. Remove the Battery. This is one of the most important steps. Don't take time to think about it, electricity and water do not mix. Cutting power to your phone is a crucial first step in saving it.
2. Dry your Phone. Obviously you need to remove as much of the water as soon as you can to prevent it from getting into the phone. Use a towel or a paper towel to remove as much of the water as possible.
3. Soak in Alcohol. Alcohol is hygroscopic (attracts water), it will dissolve all the water in the phone, which will then pour out of the phone with the alcohol. Any remaining alcohol will evaporate. Alcohol will not harm your phone but may mess up glue (from stickers and the like). Use 95% alcohol, not the regular 70% rubbing type. Do it outside!. If you use alcohol, do not follow the rest of the advice here, instead leave your phone outside for a day or two to dry.
4. Allow the phone to dry. Since you do not want to ruin your phone or lose all the numbers in your phone book, you need to allow the phone to dry. Don't try putting the battery back on to see if it works as this would risk damaging the phone with a short circuit. Leaving your phone in a bowl of dry rice will help to expedite moisture evaporation.
5. Heat your Phone. Apply enough heat to your phone to cause the water to evaporate without waterlogging your digital screen. One of the best things you can do to save a cell phone is to set it on the back of your computer monitor or TV screen over the heat vents. This is usually the perfect amount of heat to fix your phone. The convection action of the heat vents will help carry away the moisture in your phone. Leave the phone on the heat for at least 2-3 days. Another option is to leave it overnight in the oven on warm (make sure to take off the battery first).
6. Test your Phone. After you have waited 3 days, make sure everything is clean and dry looking and re-attach the battery to the phone and see if it works. If your phone does not work repeat step 4. If it still won't work, try taking your cell phone to an authorized dealer. Sometimes they can fix it.
Tips :
§ Don't put the battery on for at least 3 days or longer if your digital screen is foggy.
Place a piece of satin finish scotch tape over your water damage sticker before you drop your cell phone in the water to prevent the water damage sticker from voiding your warranty. This sticker can usually be found under your battery. It's a small round white sticker, possibly with dots on it. If this sticker gets wet it changes color and your phone is marked for water damage.
§ Remove the tape if you ever have to return your phone for repairs or warranty. (See the note in the 'Warnings' section about doing this!)
§ The best way to dry out your phone is to place it in front of an air conditioner or air conditioning vent. Cold air won't damage your phone (hot air can warp or in extreme cases even melt plastic), and air from an air conditioner is dry, and so will evaporate water faster than you might think (which is why a car air conditioner will de-mist the windshield so effectively, even if the engine hasn't warmed up yet). Warm air from a reverse-cycle air conditioner works even better, of course. If you dry your phone in this way overnight it should be fine by the morning.
§ Use a hairdryer set on warm; it won't melt your head so your phone should be safe.
§ Use a food dehydrator.
§ Use the oven on the warm setting (make sure to take out the battery)
Warnings :
§ Don't heat the battery or it could leak acid. If you use an oven or hairdryer, make sure to remove the battery first.
§ If you use alcohol make sure to do so outside, and do not apply heat in any form, not even the gentle heat of a monitor. Do not hook up the bettery till the alcohol smell dissipates.
§ Do not apply heat to your phone other than mentioned above. You don't want to melt or burn your phone.
§ Warranty fraud is naughty! If you dropped your phone in the can with your other 'droppings'--are you really going to send it in for a warranty tech to have to open? Yuck!
§ FYI, Most modern phones have more than one liquid damage indicator on them, only one visible to you (and sales/technician agents), and chances are, if the sticker under the battery is triggered (or would be, with the scotch tape trick), then the odds are that the internal stickers you can't access are tripped as well.
§ This will still result in you paying a voided-warranty fee in the long run, and it may be best to just learn from your mistake (and not make it more financially severe!).
§ Even if all these steps are followed, minerals dissolved in the water can recipitate on solder and component pins, causing corrosion or shorting. Components pins are packed so closely together in a modern cell phone that even a small encrustation can create a short, rendering the phone inoperable
How You Repair A Dead China Phone:
First we need to know why a phone is dead-
1. For Software
2. For Hardware
1. For Software-
Flash is its final solution, but mtk cpu 90% phone done by format. if its MTK,SPD,AD, SI4904 cpu first try to format than try to full flash your phone with a good and perfect flash file. and other cpu haven't format option, so direct flash them. when you flash careful about original flash file version.
A. what you do before format or flash-
Always remember, before format or flash of your any china phone must first backup your current flash file if phone is dead, also do it. because it will help to find its original flash file version and many other.
B. What you need for flash or format a china phone-
(1) Connecting device (also your can do it with usb to serial cable but a device/box can give you full/final solution)
(2) Phone TX and RX.
(3) Need to know phone cpu type/model, flash chip type/model, Flash file version.
(4) For Flash need a good flash file which same to your phone original flash file version.
C. What problem you face for wrong flash file
(1) phone still dead
(2) white screen
(3) keypad not work
(4) phone hang after power on
(5) keep restarting
(6) no network
(7) etc.
Tool For MTK Flash info
2. For Hardware-
when a dead phone not possible to repair only with software you need to repair phone hardware.
Which hardware you need to check for dead phone-
(1) when you try to flash if phone not boot check power source/battery voltage/V+ pin in phone connector. just do confirm phone found enough voltage for software operation.
(2) if phone power source is ok but still not boot, do confirm your tx and rx is 100% working/tested.
(3) if tx rx is ok, than check your phone connector, its tx rx pin is confirm connect with cable and internal connector pin is joint on pcb perfectly.
(4) if pin is ok, maximum china phone tx rx going to cpu after crossing a resistor or capacitor so check them.
(5) if resistor is ok now you need to check boot diod, all phone have no boot diod so last try is check cpu tx rx pin.
(6) if boot is ok but phone not receive flash file, maximum time this problem coming from flash ic or ram (maximum china phone flash memory and ram have in one chip). so you need to try first re-hot it if still not solve change it.
but its true flash chip/ram always show error not only for them, sometimes cpu to flash chip/ram connection lost for bad cpu pin or bad cpu soldering on pcb. so check both of them.
(7) phone flash ok but not power on (although file is 100% correct) , for it you need to check
Flash chip/ram (95% include in 1 chip)
Clock crystal and battery
26mhz (near rf ic)
Rf ic,
Power ic and v+/b+ way
Bt ic
Last try is cpu.
1. For Software
2. For Hardware
1. For Software-
Flash is its final solution, but mtk cpu 90% phone done by format. if its MTK,SPD,AD, SI4904 cpu first try to format than try to full flash your phone with a good and perfect flash file. and other cpu haven't format option, so direct flash them. when you flash careful about original flash file version.
A. what you do before format or flash-
Always remember, before format or flash of your any china phone must first backup your current flash file if phone is dead, also do it. because it will help to find its original flash file version and many other.
B. What you need for flash or format a china phone-
(1) Connecting device (also your can do it with usb to serial cable but a device/box can give you full/final solution)
(2) Phone TX and RX.
(3) Need to know phone cpu type/model, flash chip type/model, Flash file version.
(4) For Flash need a good flash file which same to your phone original flash file version.
C. What problem you face for wrong flash file
(1) phone still dead
(2) white screen
(3) keypad not work
(4) phone hang after power on
(5) keep restarting
(6) no network
(7) etc.
Tool For MTK Flash info
2. For Hardware-
when a dead phone not possible to repair only with software you need to repair phone hardware.
Which hardware you need to check for dead phone-
(1) when you try to flash if phone not boot check power source/battery voltage/V+ pin in phone connector. just do confirm phone found enough voltage for software operation.
(2) if phone power source is ok but still not boot, do confirm your tx and rx is 100% working/tested.
(3) if tx rx is ok, than check your phone connector, its tx rx pin is confirm connect with cable and internal connector pin is joint on pcb perfectly.
(4) if pin is ok, maximum china phone tx rx going to cpu after crossing a resistor or capacitor so check them.
(5) if resistor is ok now you need to check boot diod, all phone have no boot diod so last try is check cpu tx rx pin.
(6) if boot is ok but phone not receive flash file, maximum time this problem coming from flash ic or ram (maximum china phone flash memory and ram have in one chip). so you need to try first re-hot it if still not solve change it.
but its true flash chip/ram always show error not only for them, sometimes cpu to flash chip/ram connection lost for bad cpu pin or bad cpu soldering on pcb. so check both of them.
(7) phone flash ok but not power on (although file is 100% correct) , for it you need to check
Flash chip/ram (95% include in 1 chip)
Clock crystal and battery
26mhz (near rf ic)
Rf ic,
Power ic and v+/b+ way
Bt ic
Last try is cpu.
Subscribe to:
Posts (Atom)