Roaming on ATT but does not show it on coverage map?
Happy Easter everybody!
As I was on my way home from my grandmas, I started roaming on ATT, and I have done this one time before last month. But the funny thing is on the way there I DON'T roam, only the way back? Any idea why? And the maps shows where I roam. It does not state it on the map tho.
That happens occasionally on my phones too. Not entirely sure why. Last month, my webconnect was on at&t 2g in galesburg to peoria IL while my amaze refused me access. Went the other way around the month before. I've roamed on at&t in the west suburbs of chicago occasionally too. (Lisle, IL). But then its gone. No clue why.
OK. As long as a GSM phone has a signal it can use it is perfectly happy to continue using it. Only when that signal is lost does it start looking. At that time it will lock onto the strongest signal that it can register on. If you kept your T-Mobile signal on the trip there, the phone would have no reason to roam.
Roaming can be really weird at some times, I was in Tennessee a few weeks ago in the part right above NorthCarolina. I was on a road that was supposed to not have signal by any provider and then I got a At&T signal from the town I had just came from which was weak because I was in the mountains, It could have been you were getting a roaming signal from an area around you.
Funny, I get about -105 to -115 inside my house with T's UMTS in a moderate rated coverage area. Cover the antenna end of the N900 phone, and the signal is gone. UMA and Wi-fi calling on other phones (switch SIM) takes care of it inside.
To the origninal poster, I have experienced the same thing. Working outside in a moderate to no coverage area (white holes on map), the phone will sometimes roam when when the maps show the nearest romaing about 10 miles to the east in a different county. And I've also noticed that if I initiate a call when roaming in such an area and then drive back into a good T coverage area, the call will stay on roaming until ended and then switch back over to T. Voice roaming is a nice perk and keeps me connected in many rural places.
Originally Posted by E_tron
Sometime the coverage map under claims roaming coverage. There are several "anti holes" in the roaming coverage map I can point out. It's a mystery.
Be thankful you can roam there. That spot probably has -115dB signals available on the top of the roof . That counts as coverage right?