If I unlock the 521 and pop in an AT&T SIM card, what kind of data speeds can I expect to get?

[saintforlife]

I am not sure of the frequency differences between AT&T/T-Mobile and 521/520. I want to unlock my 521 and put in my AT&T SIM card and use this phone as my daily driver for a while. Will I be able to make calls without issues (are the cell frequencies compatible)? Also what kind of data speeds can you expect with an AT&T SIM on the 521?

 

[Corepc]

Re: If I unlock the 521 and pop in an AT&T SIM card, what kind of data speeds can I expect to get?

It Supports AT&T 3g/4g HSPA Bands and should work fine on AT&T if you can get it unlocked.

 

[Colby Lee]

2g only. My advice is to use simple mobile for the time being, unless you are stuck in contract and would have to pay extra, then I would go to your local at&t store and purchase the 520 for 100 bucks.

 

[Colby Lee]

Re: If I unlock the 521 and pop in an AT&T SIM card, what kind of data speeds can I expect to get?

Any tmo branded phone will not receive at&t's 3g. Been doing it for years, and just recently experienced it on 3 devices through my family/friends , so I know it hasn't changed.

 

[tgp]

Re: If I unlock the 521 and pop in an AT&T SIM card, what kind of data speeds can I expect to get?

I am not sure of the frequency differences between AT&T/T-Mobile and 521/520. I want to unlock my 521 and put in my AT&T SIM card and use this phone as my daily driver for a while. Will I be able to make calls without issues (are the cell frequencies compatible)? Also what kind of data speeds can you expect with an AT&T SIM on the 521?

I did exactly that. I have a Net10 SIM card using AT&T, and when I put it in my unlocked 521 it works great, including MMS & 4G. I've seen speeds up to 7Mbps down, but of course that varies greatly by location.

 

[saintforlife]

Re: If I unlock the 521 and pop in an AT&T SIM card, what kind of data speeds can I expect to get?

2g only. My advice is to use simple mobile for the time being, unless you are stuck in contract and would have to pay extra, then I would go to your local at&t store and purchase the 520 for 100 bucks.

It sucks if it is only 2G. Damn I should have waited for the ATT version of 520. It is cheaper, doesn't have the stupid logo in the front, has better proportions (4mm shorter) as a result and has more accessory support being the same as the global model of 520.

 

[mogelijk]

Re: If I unlock the 521 and pop in an AT&T SIM card, what kind of data speeds can I expect to get?

It sucks if it is only 2G. Damn I should have waited for the ATT version of 520. It is cheaper, doesn't have the stupid logo in the front, has better proportions (4mm shorter) as a result and has more accessory support being the same as the global model of 520.

As others have stated, it will get 3G/HSPA+ speeds on AT&T. The L521 has the 1900 Mhz band that is needed for 3G on AT&T.

 

[Colby Lee]

Re: If I unlock the 521 and pop in an AT&T SIM card, what kind of data speeds can I expect to get?

I did more research and I was wrong. It apparently does support 3g. That's what I love about technology, no matter how knowledgeable you are, there's always something new to learn.

 

[WPhoney]

Re: If I unlock the 521 and pop in an AT&T SIM card, what kind of data speeds can I expect to get?

What if I do the opposite? I mean, what if I unlock an AT&T 520 and take it to T-Mobile? Would I lose any wireless bands?

 

[tgp]

Re: If I unlock the 521 and pop in an AT&T SIM card, what kind of data speeds can I expect to get?

What if I do the opposite? I mean, what if I unlock an AT&T 520 and take it to T-Mobile? Would I lose any wireless bands?

Yes, I tried that too. Data on T-Mobile will be Edge, unless you happen to be in one of T-Mobile's refarmed areas.

 

[rkin92]

Re: If I unlock the 521 and pop in an AT&T SIM card, what kind of data speeds can I expect to get?

Yes, I tried that too. Data on T-Mobile will be Edge, unless you happen to be in one of T-Mobile's refarmed areas.

Sightings of T-Mobile 3G/4G/HSPA+ coverage on 1900MHz (PCS/UMTS band II)

http://support.t-mobile.com/docs/DOC-5736

So if you live in a major city, you are in luck.

The speed imo is enough for me. When I use friends VZW LTE phones, I notice a difference but its meh to me... since im on wifi 97% of the time.

Ironically, EDGE isnt that slow for me either if you use Opera Mini/Nokia Xpress Browser for simple things.

 

[worldspy99]

Re: If I unlock the 521 and pop in an AT&T SIM card, what kind of data speeds can I expect to get?

7 Mbits/sec, someone had posted screenshots in late 2012. If I can find that thread, I will post it here.