4G turning on automatically - EVO 4G Q&A, Help & Troubleshooting

I work at a sprint store and in the past few weeks we've been having a lot of long term evo owners come in complaining about 4G turning on by itself. What to do?
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It might be with a setting somewhere in the sprint optimizer app released in the latest ota
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Related

What is PRL?

just wondering, what does PRL mean? I've seen a lot of people mention it when talking about phone signal. Does it help with signal or anything?
Thanks,
Rik.
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Preferred Roaming List.
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force roam

Sprint is terrible in my area so I always force roam when im home and ive been doing this for about 6 months now with no problems, but Lately when I turn force roam on I get no service or 1 bar. Ive tried to reflashing roms and also updating profile and what not. Any help would be cool, thanks.
Maybe sprint saw how much force roam data you were using and cut you off
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Yeah i was thinking that also, it sucks i get no service at my house.
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That'd probably what it is. At least they didn't cut you off for roaming too much.
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After Jb OTA am getting 4G in status bar when Orange needs 3 years to provide it!

How could this happen!! My phone is a T-Mobile T999 unlocked and working on Jordanian Orange. According to orange they will begin providing 4g in 2015 yet in status bar I see that am connected to 4g. Could the T-Mobile build be exaggerating figures ??
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Mine always shows 4g...Although truly I am not always connected to 4g.
Just run a speed test and you will see.
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Most phones would show H or H+. The T999 was coded to show 4G instead, in keeping with their ad campaign.
If you go into settings, about device, status, under network type itll say UMTS at idle and probably HSPAP when under load.
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What are some good ways to do a speed test?
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mafak said:
What are some good ways to do a speed test?
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Click to expand...
Click to collapse
Use speedtest.net its in the app store
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Tested using speedtest.net
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Cm10.1 data switching issue

When I turn on my data it switches between 3g and 4g and I can't even figure it out
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That is how it is supposed to work, nothing to figure out.
My gfs phones never switches or anything my phones does all the time
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What is she on and it never switches to what? If she hasn't updated her modem it will stay on 3g all the time. It is like this on every AOSP rom for our phone. Unless there is a theme that edits it out.
If speedtest says it's fine, it's fine.
It just switches from 4g to 3g all the time but I guess I'll have to live with it
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dougie1792 said:
It just switches from 4g to 3g all the time but I guess I'll have to live with it
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Click to expand...
Click to collapse
Its how its suppose to work. H shows when cell data is accessed and when idle it shows 3g... Not sure why it bugs some people.
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Slow speeds? Poor reception?

Recently came from the lg optimus g to this. When I had the G it consistently ran on 4g lte speeds of 15-18 , even saw 21 mbps download ....now on this its rarely above 3/5 bars and hd on youtube takes ages to load...normally id think att docked my speed because im over 5gbs but ive only had this device since sunday and todays the 5th .
Whats going on?
Edit: my galaxy is 100% stock
Stock rom, not rooted, everything stock
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Bump
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Check your apn settings. If it is set to pta, switch to phone.
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Where would I find those settings?
edit: apn settings in this case only option is the phone
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