# MC7455's 3G not stable

**URL:** <https://forum.sierrawireless.com/t/mc7455s-3g-not-stable/13165>\
**Category:** MC/EM Series\
**Created:** [July 13, 2018, 6:49pm UTC](https://forum.sierrawireless.com/t/mc7455s-3g-not-stable/13165 "2018-07-13T18:49:37Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![knguyen1](https://avatars.discourse-cdn.com/v4/letter/k/e9bcb4/32.png) [@knguyen1](https://forum.sierrawireless.com/u/knguyen1)\
**Post date:** [July 13, 2018, 6:49pm UTC](https://forum.sierrawireless.com/t/mc7455s-3g-not-stable/13165/1 "2018-07-13T18:49:37Z")

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Hi,

I am having problems connecting to 3G with MC7455, I have tried different firmwares for MC7455 (old and recent) but it is not working as it is supposed to. The 3G is unstable, it is on and off continuously.

Can someone help me out.

Thank you.

Tony,