My Lumia 535 running Windows 10 Mobile has a network problem. I can't lock or force to 3G-only mode. Is there any way to lock 3G-only mode?

1 Answer 1


To change the highest connection speed your phone uses for mobile data, follow these steps:

  1. Go to Settings → Network & wireless → Cellular & SIM (or Mobile & SIM)
  2. Tap on "SIM settings"
    • on a dual-SIM phone, tap "SIM 1 settings" or "SIM 2 settings", depending on which SIM card you've set to be used for mobile data
  3. Change the "Highest connection speed" setting to your liking. One of the options should be "3G only", which I understand is what you're looking for.

For more information about SIM settings in Windows 10 Mobile, see this support article.

  • But i can't lock on 3g only mode Sep 18, 2017 at 14:00
  • 1
    What do you mean "can't lock on"? Did you find the setting I mentioned? Is "3G only" one of the options? Does it work as the name would imply?
    – Indrek
    Sep 18, 2017 at 18:10
  • 3g only mode is not in my phone Oct 11, 2017 at 13:44

Not the answer you're looking for? Browse other questions tagged or ask your own question.