I just SIM unlocked my HTC Jetstream AT&T to use it in Europe too. But now the tablet won't connect to wireless network. When i turn wi-fi on it finds my network, but just for sec or 2 and then says the networ 'not in range'. Then WI-FI just scanning continuously.
But I have Unlocked Sim , When I Use The Sim This Problem Become, If use Tablet in Ariplan Mode have not Any Problem Whit WiFi, I Found One Wifi App that Solve This Problem But not Completly , When This Problem apear, I Most Use This App And restart My Tablet