LTE OnOFF TeamAndIRC
This looks like the most current way to turn LTE off, as it came out earlier today. Its not really a toggle widget yet (just a shortcut to the preferred network settings, where you can change from 4G to 3G), but its the best thing we have so far. And the developer is the team that was the first to root the TB. "Real Widget Toggle coming soon" (quoted from market listing, so stay tuned).
Link isnt working....
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Phone Info does the same thing and also for free.
This isn't really a toggle yet. It just brings up the same menu that you get by dialing in *#*#4636#*#* or using the Phone info app. I also created a custom wedgie to bring up this menu, but don't actually use it much for a couple of reasons:
Originally Posted by guitarchris123
1) I'm addicted to 4G speed
2) To make this work, I frequently have to reboot my phone for some reason
3) it seems to use a lot of battery when toggling back and forth
So I just enjoy all the speed and functionality of this phone and pop in one of my 2 back-up batteries when I need more power. But that's just me.