4G not really working it seems

[kjpaz]

In the last 48 hours my 4G connectivity is horrible. It says I have 4G in this area (and it's not a new area by any means... same place every day - never any problems) yet my apps wont refresh and when I try to do it manually they end up not responding. When I use WiFi I have no problems at all. I really don't want to reset my phone. HELP!

[tikibar1]

Do you have background data turned off?  Have you tried reseating your SIM card?

[kjpaz]

Yes, background data is turned off. I have not reset the SIM card. How do I do that?

[Snn5]

Reseat....Power down.  Remove SIM.  Check the slot for damage and the card as well.  Re-insert SIM.  Power back on.

[tikibar1]

When removing/reinserting the SIM card, be careful not to touch the gold contacts.

Your issue is probably related to turning off background data; that will keep apps from refreshing (automatically and manually).  You may want to turn off background data app by app rather than system-wide in the data usage section of your phone (scroll down to the app section, click app to see more info., then check Restrict Background Data).

[kjpaz]

I reset the phone took out the SIM card and placed it back in there and unfortunately I still have the same issue. Super slow and not responding even though have full 4G coverage.

[Snn5]

tikibar1 makes a good point about checking apps for "restricted Background Data"

[kjpaz]

why would this all of a sudden happen. Have had the phone for a few months no problems and then nothing different done to the phone in the last few days.

[tikibar1 · Accepted solution]

Another thing to check is that with the recent update that the phone received, it could have set the phone to Global setting rather than LTE/CDMA, i.e.,

settings > under Wireless & Networks, click More > at the bottom, tap Mobile Networks > tap Preferred Network Type > use the radio buttons to switch it to LTE/CDMA