I regularly use the Hotspot feature on my Thunderbolt and constantly have issues with web access failing after some period of time. The web access fails both directly from the Thunderbolt as well as devices connected via hotspot/wifi. When I go to the phone settings using #*#*4636*#*# and use "Run ping test", I'll get: Ping IpAddr: Pass Ping Hostname (www.google.com): Pass HTTP Client test: Fail: IOException I'm in a strong 4G service area (in San Diego next to Qualcomm corp) and while this is happenning, I see 4G active. However, I've also seen this when only in a 3G area so I don't think it is 4G related. And, this is not a handset issue because I've seen this issue on 3 different handsets (I've had to exchange my Thunderbolt due to power button issues and screen issues). I'm guessing this is a bug in the hotspot feature. Has anyone else experience this?