My wifi is not working since the last update to 8.2 on iphone 4s

Question

after update ios 8.2 in 3days my wifi is greyout and not working i have try the reset networking setting but still itz like the same plz help me to turn on wifi back i have wifi connetion in my office and home too but i cant access the wifi through my mobile nw im using my mobile data but **** battery dies quickly plz help me solve this problam guyz,,,,,,,,,,,,,,,,,,,,,,,
thank you

Answer 1

Yes, contact Apple Support about that. Since your phone is out of warranty, you'll have to pay the Out-Of-Warranty-Service fee, if you want to get your phone replaced by a working device.
Out-of-warranty repair service
If your repair isn’t covered by Apple’s One Year Limited Warranty, AppleCare+, or AppleCare Protection Plan, your iPhone might be eligible for out-of-warranty service. For example, liquid damage isn’t covered by warranty but might be eligible for out-of-warranty service. Some damage isn’t eligible at all, for example if your device has been broken into multiple pieces. See Apple’s Repair Terms and Conditions for complete details.
Read Apple’s Repair Terms and Conditions
Model
Out-of-warranty service fee
Battery service*
iPhone 6 Plus
$329
$79
*available only if battery
fails Apple’s diagnostic test
iPhone 6
$299
iPhone 5s, iPhone 5c, iPhone 5
$269
iPhone 4s
$199
iPhone 4, iPhone 3GS, iPhone 3G,
Original iPhone
$149
Plus a $6.95 shipping fee, if required. Fees are in USD and exclude local tax. Pricing is for service through Apple. The final service fee we charge will be determined during testing and may be less than the service fee listed above. Pricing and terms vary for service through an Apple Authorized Service Provider.
copied from Service Answer Center - iPhone