Digitizer not functioning well.

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iPhone 4

第四代iPhone。维修过程直观易懂，但前置玻璃和LCD面板无法分开，只能作为同一零件更换。GSM版本， 8, 16, or 32 GB 容量 / 型号 A1332 / 黑色或白色

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SIMRAN @simransingh

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发帖于: 2012年4月4日

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Digitizer not functioning well.

iphone4 16gb stop responding to touch after talked on the phone. it was working well before i listened to call for near about 40min. after disconnecting the call touch of phone not working. i restored the phone 2 times. check the internals . nothing found out. changed the screen 3 times from the market and 1 from the working phone. touch of this phone is working in another phone but not in this phone. i takes out the logic board and remained un contacted from battery for 30 mins but still same . logic board looks fresh. phone never opened before. i checked only. help.........

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Nick @nick

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发帖于: 2012年4月11日

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First, this is going to need a new display assembly. If that doesn't work, then it's the motherboard in the phone, or simply a defective replacement. Get another one if this is the case to confirm.

iPhone 4 屏幕总成更换

Should this be the motherboard, don't bother fixing it. The boards cost more then a phone and you have to be careful, since some of them are IMEI/ESN blocked. You can't verify a lot of these, since some sellers don't know or evade the question for obvious reason. I wouldn't bother.

They can also cost more then the phone is worth at times.

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i changed so many . the problem is in the logic board . have any idea ? i found 2 chips are responsible for this but very hard to get that .

由 SIMRAN 完成的 2012年4月11日

You need to know compoent level soldering, whicj is that tough

由 Nick 完成的 2012年4月12日

yup i will try with that . otherwise last option is to replace the logic board

由 SIMRAN 完成的 2012年4月12日

like I said, you need to compare the cost and find the best deal, DO NOT buy used boards due to the IMEI block risk, only time you do is if you get a cracked 4 on craigslist and it is not stolen, and the IMEI is clean and checkable

由 Nick 完成的 2012年4月12日

Here in india apple is replacing the phone on chargeable basis. i will go there becoz they are giving a new phone. then thats it the better option.

由 SIMRAN 完成的 2012年4月12日

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i changed so many . the problem is in the logic board . have any idea ? i found 2 chips are responsible for this but very hard to get that . — SIMRAN
You need to know compoent level soldering, whicj is that tough — Nick
yup i will try with that . otherwise last option is to replace the logic board — SIMRAN
like I said, you need to compare the cost and find the best deal, DO NOT buy used boards due to the IMEI block risk, only time you do is if you get a cracked 4 on craigslist and it is not stolen, and the IMEI is clean and checkable — Nick
Here in india apple is replacing the phone on chargeable basis. i will go there becoz they are giving a new phone. then thats it the better option. — SIMRAN