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Hai every body,
I have an Sony xperia ZR model smart phone. I recently purchased before 2 weeks. i have a problem in my smart phone from the date of purchased (ie) when i try to connect my mobile through wifi, wifi was properly connected but internet (ex: face book, mails, youtube) not working in my smart phone. but i have worked through mobile data in prepaid sim internet (ex: face book, mails, youtube) was properly worked. At the same time i connect the wifi in my old samsung galaxy grand mobile wifi was connected & internet (ex: face book, mails, youtube) was properly worked. Please solve the issue as early as possible. I think the internal problem is in sony xperia zr mobile
Refer to this link for a start, http://talk.sonymobile.com/t5/FAQ/Wi-Fi-problems/m-p/348104#U348104
If still unsuccessful, probably the next step is to repair phone software.
I don't think this is a hardware issue, you try removing the WiFi connection, and add again, make sure you type correct password. Also if you had installed any third party softwares to replace / change your IP address you need to repair your phone using SUS...
For Re ading WiFi
Settings > WiFi > Click the SSID, choose Forget - again add...
Sony Update Service