# wr21 mix 2 chips 4g

**URL:** <https://forums.digi.com/t/wr21-mix-2-chips-4g/20753>\
**Category:** Digi TransPort WR (Series)\
**Tags:** wr21, question, bonding\
**Created:** [September 10, 2019, 1:41pm UTC](https://forums.digi.com/t/wr21-mix-2-chips-4g/20753 "2019-09-10T13:41:47Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ZedrikPE](https://avatars.discourse-cdn.com/v4/letter/z/8dc957/32.png) [@ZedrikPE](https://forums.digi.com/u/ZedrikPE)\
**Post date:** [September 10, 2019, 1:41pm UTC](https://forums.digi.com/t/wr21-mix-2-chips-4g/20753/1 "2019-09-10T13:41:47Z")

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hi guys

i bought the digi transport wr21 and my question is it possible to use 2 chips and mix the internet speed

like if i got 1 chip 4g with 20mb of connection

and another with 10mb

is possible to make a “bonding” for reach the 30mb in one?

or the secondary chip is only for redundant connection

and the other is about the 4g/3g , can i use the wr21 with one chip 4g and the secondary with a 3g chip?

sorry for my bad english haha

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**Author:** ![Bryonhu](https://avatars.discourse-cdn.com/v4/letter/b/4da419/32.png) [@Bryonhu](https://forums.digi.com/u/Bryonhu)\
**Post date:** [September 10, 2019, 2:40pm UTC](https://forums.digi.com/t/wr21-mix-2-chips-4g/20753/2 "2019-09-10T14:40:47Z")

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By chip I assume you mean SIM

You can not bond (combine) the SIM’s as only one is able to be live at a time in the WR21.

It is a fallback SIM if one fails (Redundancy)