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WiFi not able to turn on

I have problem with my phone this morning. First it didn't not connect to wifi so when i check in the setting, i found there is no wifi available shown in box so i did reset but still same couldn't find any wifi. then my email start crash. i can't open email app so i go setting again and delete the email account and add again so i can see my email again. then i start try to turn the wifi, it is become gray and not able to turn wifi on. i did reset and clsoe but still same. anyone have idea how to fix. Thank

iPhone 4S, iOS 5.0.1

Posted on Jan 6, 2013 4:57 PM

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14 replies

Jan 6, 2013 5:09 PM in response to Lawrence Finch

Thank for suggestion. I did the network reset but still same problem. my phone was working with wifi till this moring before i come to work. it start happen just afew min ago only. Blutooth still can on no problem. i still can see wifi mac address in setting. only left to do is to rest the whole iphone to factory setting. it is abit difficult for me. take time and i could not do here as i don't bring my laptop.

Jan 6, 2013 7:38 PM in response to Lawrence Finch

Hi Mr. Finch,


Thanks for you suggestion. I will do once i back home. I have another issue but it is not relate to wifi, if you can help on. my girlfriend phon 4, 8GB is so hot during charging and battery drain so fast. Another problem is camera can't focus. So when we shoot photo near object alway blur. I try to call apple techanical support but they are always busy and can't give the right answer.

Jan 7, 2013 6:04 AM in response to thetmaungchan

If it gets hot and discharges fast there is a program on the phone that is stuck in a loop sending data or trying to send and failing. You need to find that program and kill it. If you have an Exchange email account or an iCloud account it can be one of those; try turning off the email accounts (Settings/Mail,contacts,calendar, then tap on the account name for the switches), rebooting the phone (hold HOME and SLEEP at the same time until an Apple log appears), then turn the accounts back on. The FaceBook app can also cause this problem.


For the camera focus, if you have a case on the phone try removing it. If that fixes the problem your case is incompatible with the phone. If that doesn't fix it take the phone to an Apple store (make an appointment first) and they will replace it, because the warranty is 1 year.

Jan 7, 2013 6:51 AM in response to Lawrence Finch

Hi Finch,


thank for your answer. i did all kind of things like i restore the phone as new without any problem but problem still same also camera, can't do any focus. i think i will go to service provider. One things i'm not sure you have experience. I bought my iphone 4s from singapore and currently i'm working in thailand. i'm not sure i can go to apple service provider. Please advice me if you have knowledge on that. i can't go back to singapore just for repair my phone. 😟

Jan 8, 2013 10:04 PM in response to thetmaungchan

I knew already the cause of the problem. That is the wifi chip damage of lose connection when it drop frequently or because of vibration. only way is send to apple to get new one but it is not applicable for me because i bought my phone in singapore and apple care refuse to repair in different country. other option is replace the wifi chip at outside phone shop. it will voide warranty but it will work.

WiFi not able to turn on

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