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Flash AT&T Modem on G900T?

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By MattMJB0188, Senior Member on 18th May 2014, 10:37 PM
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10th July 2015, 01:24 AM |#31  
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Quote:
Originally Posted by Polekat

AT&T uses HSPA+ frequencies, while T-Mobile and METROPCS (now a conglomerate) use GSM frequencies. I believe that the hardware is capable of both, but obviously the carrier will optimize it for their broadcast type through software. Unfortunately I don't know anything about flashing as my computer is down and I'm a noob. Sent from G900T1. Hope this helps.

"The power of accurate observation is frequently called cynicism by those who don't have it."

HSPA+ is a data technology. Like 4g/LTE/3G/etc. Not a cellular/mobile phone technology per say like GSM/CDMA. Both tmo and att are GSM carriers. Both have hspa+ also.
 
 
10th July 2015, 07:53 PM |#32  
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@ ShinySide
Thank you for correcting me, as it prompted further research and a better understanding. While I could find no reference to any hardware difference between STANDARD S5 models offered in the states (besides 16gb or 32gb versions), there are differences in carrier frequencies. Also, the S5 uses both 2g and 3g for voice, but only 3g and 4g,for data. Here are the listed frequencies for some major US carriers.

AT&T = GSM/HSPA+, LTE
2g : 850MHz,1900MHz
3g : 850MHz,1900MHz
4g : 700MHz, 850MHz, 1900MHz, 1700/2100MHz

T-Mobile = GSM/HSPA+, LTE
2g : 1900MHz, 1700/2100MHz
3g : 1900MHz, 1700/2100MHz
4g : 1700/2100MHz

Sprint = CDMA/EVDO, WiMax, LTE
2g : 800MHz, 1900MHz
3g : 1900MHz
4g : 800MHz

Verizon = CDMA/EVDO, LTE
2g : 850MHz, 1900MHz
3g : 850MHz, 1900MHz
4g : 750MHz, 1700/2100MHz

U.S. Cellular = CDMA/EVDO, LTE
2g : 850MHz, 1900MHz
3g : 850MHz, 1900MHz
4g : 700MHz, 850MHz

* Specialty models (Active, Sport, Mini, etc.) obviously do have different hardware.

* Note : Generally speaking, lower frequencies allow carriers to provide coverage over a larger area, while higher frequencies allow carriers to provide service to more customers in a smaller area.

"The power of accurate observation is frequently called cynicism by those who don't have it."
10th July 2015, 11:23 PM |#33  
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Quote:
Originally Posted by Polekat

@ ShinySide
Thank you for correcting me, as it prompted further research and a better understanding. While I could find no reference to any hardware difference between STANDARD S5 models offered in the states (besides 16gb or 32gb versions), there are differences in carrier frequencies. Also, the S5 uses both 2g and 3g for voice, but only 3g and 4g,for data. Here are the listed frequencies for some major US carriers.

AT&T = GSM/HSPA+, LTE
2g : 850MHz,1900MHz
3g : 850MHz,1900MHz
4g : 700MHz, 850MHz, 1900MHz, 1700/2100MHz

T-Mobile = GSM/HSPA+, LTE
2g : 1900MHz, 1700/2100MHz
3g : 1900MHz, 1700/2100MHz
4g : 1700/2100MHz

Sprint = CDMA/EVDO, WiMax, LTE
2g : 800MHz, 1900MHz
3g : 1900MHz
4g : 800MHz

Verizon = CDMA/EVDO, LTE
2g : 850MHz, 1900MHz
3g : 850MHz, 1900MHz
4g : 750MHz, 1700/2100MHz

U.S. Cellular = CDMA/EVDO, LTE
2g : 850MHz, 1900MHz
3g : 850MHz, 1900MHz
4g : 700MHz, 850MHz

* Specialty models (Active, Sport, Mini, etc.) obviously do have different hardware.

* Note : Generally speaking, lower frequencies allow carriers to provide coverage over a larger area, while higher frequencies allow carriers to provide service to more customers in a smaller area.

"The power of accurate observation is frequently called cynicism by those who don't have it."

S5 is capable of VoLTE (voice over lte), well least tmos, if VoLTE is available in your area. Don't know about att
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