Aight. Hello! I have an LG Optimus L7. I have been using that phone for about 6 Months now and never faced any serious problem except the fact it's sooo laggy. Anyways, One day I take my phone off the charger and start messaging some friends on WhatsApp and the phone just turns off. The screen fades away and it restarts. I looked into the issue more and it turns out the phone turns off only when I'm connected to WiFi. Otherwise without WiFi, My phone works perfectly. I tried using Internet with 3G and it didn't turn off either. I turn WiFi on and after a few seconds later the phone turns off. I tried removing the SD Card, that didn't help. I haven't downloaded any new app in the last month that could cause this to happen. Idk .. I really need help here Thank You!!