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Unlock your T-Mobile Nokia Lumia 710 for AT&T
Email
@Giodelgado
Unlock your T-Mobile Nokia Lumia 710 for AT&T
Recently I ordered from Amazon a Lumia 710 locked to T-Mobile for a family member, the supported bands on this device according to the T-Mobile’s website are GSM 850/900/1800/1900 UMTS 850/1700/2100 (on Nokia USA the UMTS 1900 band is displayed) and AT&T supports the GSM 850/900 UMTS 850/1900 bands, so I thought why not order it and get an unlock code from eBay.
So far everything that I have tested works:
- Calls (incoming/outgoing)
- Texts (for MMS read below)
- Data (above 3G, read below)
When the Lumia 710 arrived I inserted the micro sim card and it asked me for the unlock code, after receiving the code from an eBay seller and unlocking the device I tried to use the data since the device shows the 4G icon but it didn’t work! I needed to use an APN (like the network settings for my carrier),I tried wap.cingular on the APN settings and the internet worked perfectly, on the device browser I used www.mobilespeedtest.com and on the first test it gave me around 230kbps (around 2G/EDGE speeds), the second and third tests showed above 3G speeds 1473kbps-1520kbps (above basic DSL) so this is like 4G??
After several speed tests the max I got was 4.10Mbps download and 1.08Mbps upload.
Texts worked but not MMS, the device needed the right configurations for MMS but I couldn’t get into that settings inside of Mango or even the Nokia Diagnostics App, it didn’t had those options (you can access it by pressing ##634# on the dialer), after some research I found out that there’s a Nokia Network Setup App that will automatically setup your phone according to your carrier, after that the MMS worked!
I’m still unsure if AT&T is going to find out and throttle and/or cancel my data or if the only 3G band I’m getting is the UMTS 850 or a combination of the 850 and 1900 that the Nokia USA website specifies but 3G might not work in all areas, be aware.
Guide
What you need:
- T-Mobile Lumia 710
- AT&T Micro Sim Card or a trimmed sim card
- Unlocking Code (search eBay)
What to do:
- Power off the phone
- Insert the sim card
- Turn on the phone
- Enter the unlocking code when prompted
- Do not enter any APN settings (delete them if you have any, it should be empty)
- Go to the marketplace and search for “Nokia Network Setup”
- Launch the application
- Network settings will be added automatically now you can enjoy your Unlocked Nokia Lumia 710 =)
Did it work for you?
About the Author
Giovani Delgado Thanks for reading, I have been a Nokia fan since the N95 and I'm currently using the Lumia 900, you can follow me at Twitter @giodelgado or contact me by mail giodelgado(at)nokiabits.com
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It looks like the Network Setup app is no longer available. Any idea how to accomplish this without it?
Thanks for the post. It is very much very helpful.