att lagacy throttling conundrum?

drbaltazar

OK,I read online at as some legacy type throttling going via LTE,my question.why would it also affect t-mobile?it looks like if I use epc.tmobile.com (APN) instead of default (android 5,on nexus 4)fast.T-Mobile.com art throttling isn't present or is lessened.if I recall T-Mobile has 2 or. 3 regular Sim variant one for wifi calling one for 3g and one for 2g.could any confirm.men it look like T-Mobile is defaulting user to LTE even tho we re hspa+ user.

Battlerock

This is only speculation, but t-mobile may have to give in to lte even though they were pointing toward hspa+ at first. Re-allocate spectrum from hspa use to lte if they want to be relevant.

Ridelynn

Cell phones usually have multiple antennas. They will fall back to a lesser signal if their preferred signal can't be found, or is weak enough to be deemed unreliable - usually all the way back to some very slow and outdated signals (which usually have better range and less signal loss/noise attenuation anyway).

The SIM just contains unique identifier information (and a little bit of FLASH in order to store some user data). The phone will contain some vendor-specific info (such as the APN and other carrier-specific settings), as well as any required proprietary antenna or software.

As far as throttling goes - it could be that your phone was mis-configured by T-mobile (that happens, they can fix/update it at any time via a forced over-the-air update). It could be your particular phone doesn't have the required antenna for HSPA+ (happens a lot with unlocked phones that can go between different carriers - they don't have every antenna for every unique carrier frequency). It could be your just in an area that has a weak HSPA+ signal, and your phone is defaulting to LTE for reliability. Or it could be your PIC timers on your phone aren't being utilized by Microsoft and you need to switch the output to YCBR.