If you bought a phone from someone other than your carrier, it won't work unless it is unlocked. Your SIM card has to have a voice plan and if it does, it should work for calls unless the phone you purchased
Roman,yes this is true,any data you use while your on a wifi network does not count towards your 2gb data cap. If your on AT&T you also get access to there wifi network on your device. Keep in mind those
Martha, your going to need to get the iphones serial number from the person,its best to actually have the phone so the person cant lie to you about the serial number,you will then want to call ATT or whoever
You shouldn't have any issues with batteries for a blackberry. You should only use the battery sold with your specific blackberry. You cant use any other battery. During the life of your device, you should
mhhm, have you tried going into settings-sounds-then moving the volume slider all the way up? If so,were going to look more into a hardware type deal now, does it sound muffled at all or just low

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