wa8yxm wrote:
Two things: First: They may have "lost" a tower (That is the lease agreement for the land the tower was on expired or they became "unlicensed" in that county.. I do know of one county where ONE provider, who shall not be named, bribed the county into restricting licenses (Well building permits) for towers to just them, no other company can build a tower there,, NOTE T-Mobile is one of the companies that can NOT build towers there.. Oh, I also won't name the county, Legal reasons,, If I do not name them they can not sue me.
Second: Emergency only.
This can be caused by two things.
1: System overload.. If too many people are making calls at one time the tower will send out an "EMERGENCY ONLY" notice to the remaining subscribers, This should be happening a lot next Sunday (Mothers Day).
2: T-Mobile and AT&T both use the same technology, same frequencies, in fact the phones are 100% cross compatible provided they are not jailed (Locked to one provider). Now let's say T-mobile has a tower 4 miles from the park,, AT&T builds one you can hit with a softball from within the park... Clearly you will have lots and lots of bars from the AT&T tower.. but unless T-Mobile and AT&T have an agreement on that tower's use.. You get EMERGENCY ONLY.
3:Finally, Tower problems can cause it to happen as well.
Umm no on #1 and #2.
#1 if overloaded the site sends nothing- its busy and you get a fast busy tone
#2 happens all the time in the city and your phone still works.
You are roaming onto another carriers tower and have roaming disabled on your phone or by your service contract with your regular provider.