# Disable 3g on WR21

**URL:** <https://forums.digi.com/t/disable-3g-on-wr21/20325>\
**Category:** Digi TransPort WR (Series)\
**Tags:** wr21, 3g, cellular\
**Created:** [March 13, 2019, 10:21am UTC](https://forums.digi.com/t/disable-3g-on-wr21/20325 "2019-03-13T10:21:04Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![harrington\_cit](https://avatars.discourse-cdn.com/v4/letter/h/e68b1a/32.png) [@harrington\_cit](https://forums.digi.com/u/harrington_cit)\
**Post date:** [March 13, 2019, 10:21am UTC](https://forums.digi.com/t/disable-3g-on-wr21/20325/1 "2019-03-13T10:21:04Z")

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Hi

I have a WR21(3G only)and wondering if there is a way to disable the 3G on it and force the device to use 2G/GPRS

Thanks

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**Author:** ![James.Wilson](https://avatars.discourse-cdn.com/v4/letter/j/53a042/32.png) [@James.Wilson](https://forums.digi.com/u/James.Wilson)\
**Post date:** [March 14, 2019, 4:19am UTC](https://forums.digi.com/t/disable-3g-on-wr21/20325/2 "2019-03-14T04:19:57Z")

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Hi you should be able to set the Preferred System under

Configuration - Network \> Interfaces \> Mobile / Advanced

this you should be able to lock to 2G

or in the cli you can set it with

modemcc 0 psys 2G

hope that helps