Does anyone use both cingular and tmobile service on unlocked 8700c? In my area, cingular works very well on part of city and tmobile works better on other part of city. How much hassle to swap sim cards between two services for those who has similar situation as I do?

Thanks.

Honestly, I think getting the SIM card out of the 8700 is a pain in the ass. Pulling the battery out alone is also not a good idea too often on the device, you may wear down the overall life of the Blackberry. I'd recommend picking one network and sticking to it.

You may want to look into a dual sim card. (http://cgi.ebay.com/New-GSM-Mobile-S...QQcmdZViewItem ) You may want to research this more as I have not done much research myself.

Does anyone have any evidence of these things actually working?

Soem tried this on the Moto V3 (was in the Cingular forums) but this person never came back to give us his report. However, I think the phone needs to also support dual lines and I have not found any info if the 8700 does do that.