Galaxy S2 no service unless in AT&T Hotspot

Please give more details.  S2 is a somewhat older phone.  Have you had it for a while, and it just starting doing this?  Did it update the OS recently?

So no cell service at all (including voice and text) unless in an AT&T WiFi Hotspot area?  Does it help at all to toggle WiFi off?

Hi redpoint73, thanks for trying to help...please see additional info below:

"Have you had it for a while, and it just starting doing this?"

Yes, I've had it 2 years or more, and it's been working fine except that I've not been able to charge the battery via the micro usb port since it get wet some time ago. I've been using an external battery charger for a 6 months or more and finally grew tired of the inconvenience of having to swap out batteries all the time. Last week I decided I's switch out the usb port for a new one and ever since, I've had no service.

"Did it update the OS recently?"

 No

"So no cell service at all (including voice and text) unless in an AT&T WiFi Hotspot area?"

That is correct, no voice, text, or data unless I'm in a AT&T WiFI Hotspot area.

"Does it help at all to toggle WiFi off?"

No

Hi lukest,

You stated you just replaced the USB port on your phone?

I would suggest looking and making sure you didn't accidently plug the antennas into the wrong slots on the main board, and ensure that everything was put back together properly. Most likely this is why you are having the issue.

Hope this helps!

new antenna does not remedy problem...