T-Mobile is a GSM network, so SIM cards are required.
Accessing T-Mobile voicemail lets you retrieve voice messages left when your phone was off, you were unable to answer it or you were on another call. You can dial the voicemail service directly from your T-Mobile phone or you can use a different cell phone or landline to check your messages. While normal airtime charges, including roaming fees, will apply if you call voicemail from your cell phone, T-mobile does not charge for airtime or access when you call your voicemail from another phone.
Instructions
Accessing from Your T-Mobile Phone
1. Press and hold the "1" key on your phone until it dials the T-Mobile voicemail service.
2. Dial "123" and press the "Send" key if you are unable to press and hold the "1" key.
3. Press the "End" to hang up the call when complete.
Accessing from a Landline or Another Cell Phone
4. Dial your 10-digit T-Mobile cell phone number.
5. Press "*" to interrupt the voicemail greeting when it begins.
6. Enter your T-Mobile voicemail password at the prompt. Begin reviewing messages after entering the password.
Tags: T-Mobile voicemail, Accessing from, cell phone, voicemail from, voicemail service, your phone, your T-Mobile