# Differences in Sim/eSim config items. Why is this?

**URL:** <https://community.iode.tech/t/differences-in-sim-esim-config-items-why-is-this/7772>\
**Category:** System and Apps\
**Tags:** Brax3\
**Created:** [24 February 2026 21:28 UTC](https://community.iode.tech/t/differences-in-sim-esim-config-items-why-is-this/7772 "2026-02-24T21:28:19Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![papercut](https://community.iode.tech/letter_avatar_proxy/v4/letter/p/b4bc9f/32.png) [@papercut](https://community.iode.tech/u/papercut)\
**Post date:** [24 February 2026 21:28 UTC](https://community.iode.tech/t/differences-in-sim-esim-config-items-why-is-this/7772/1 "2026-02-24T21:28:19Z")

</div>

I have a dual sim, one physical and one eSim.

1. I can set a data limit on the eSim, but I cannot set a limit on the physical sim. Why is that? This is a Brax3 device.

2. I can enable MMS on the physical Sim, but no such config on the eSim?!?

I don’t understand this… is this something to do with OpenEUICC?

physical Sim

 ![IMG_20260224_162227](https://community.iode.tech/uploads/default/original/2X/6/677930952904b4758e6487be9c2fa0e5e481baf9.jpeg)

eSim

 ![IMG_20260224_162349](https://community.iode.tech/uploads/default/original/2X/c/cb5674e50753491d27eccd616989c4f3e850f761.jpeg)