LTE dont work - Galaxy Grand Prime Q&A, Help & Troubleshooting

My lineageOS grand prime has a default setting at LTE, but i switched it in 3G and now i cant switch back to LTE, i see onlt 2 options: 2G and 3G. When i try to force LTE with a app, the calls, sms and data dont work
I've tried to reset the network settings, but the 3G is still here.
Any help?
Thank you and sorry my bad english.

What variant of the Grand Prime do you have ?

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try settings...more networks...mobile networks....network mode....It should be in there..I have the sprint model so I don't know for sure...but that is where mine is....hope this helps
djboo4you said:
try settings...more networks...mobile networks....network mode....It should be in there..I have the sprint model so I don't know for sure...but that is where mine is....hope this helps
Click to expand...
Click to collapse
Unfortunately, there is no option for Network mode on the ATT version. I wonder if this has to do with voLTE....
I did find a backway to the network mode via *#*#4636#*#* but I am unsure of what I should be setting to "disable" lte while I'm in the building at work.
I think I've sorted this out now. If I change LTE/GSM AUTO to WCDMA preferred it seems to immediately switch and hold onto 4G. I do have to change it back. Maybe I will write something so I can quick toggle this since nothing on the app store seems to work.
hi,
If you are rooted ? You can use an xpose module called Intelli3G
I use it on my phone ,works 100% and switches smoothly/fast between eg 4G..3G automatic
eg if my data is of its on 3G as soon as i switch data on /wifi it changes to 4 G
For interest sake ,here is a link to market ,you can read desciption what it does ?
https://play.google.com/store/apps/details?id=com.voidvapps.intelli3g&hl=en
good luck

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