Thumbs up [Q] BETTER LTE management on T-Mobile or any carrier.

Hey guys, I do not want faster LTE speeds, but better management to preserve as much as possible.

Here's the dilemma:

In a Family Plan on T-mobile in Florida US, with 5 people total, comes to roughly 140$ a month, unlimited talk, text, and 1G of LTE a month, and only 2G NONEXISTANT data speeds after the 1G of LTE (which we consume fast), even though we're not power users at all (maybe after 10 days we consume all of that 1G of LTE).


What would be better ways to disable and know of background services that consume data even though we're not browsing or using data at all?

One of the girls in the Family Plan has a Sprint HTC One, that I unlocked software wise, so she can't get LTE (no frequency match), so she -seems- to get the H (hspa?) symbol with a stable 4 to 8 Mb of downloads speeds that seem to consume her LTE limit slower than the rest.

Coud it be possible to get into a secret programming menu inside the Nexus 5 to disable LTE completely, and only use 3G speeds?
I remember having to disable LTE on another LG phone under MetroPCS, but only to save battery, and the 3G speeds were fine and stable.


How do you guys manage your LTE limits?


Btw, we get around 35Mb of download speed under LTE with T-Mobile, which is insane, but rather useless if the only data intensive task we use rarely is Youtube, and Youtube seems to load more than fine with just 4Mb of download speed.


Example: I wonder if dialing *#*#4636#*#*, and changing this to Evdo only, will only give me 3G speeds constantly?