# MTLS does not work on iOS **URL:** \ **Category:** Mobile Apps\ **Created:** [May 6, 2025, 10:47am UTC](https://forum.mattermost.com/t/mtls-does-not-work-on-ios/23123 "2025-05-06T10:47:20Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![erauqs](https://avatars.discourse-cdn.com/v4/letter/e/2acd7d/32.png) [@erauqs](https://forum.mattermost.com/u/erauqs)\ **Post date:** [May 6, 2025, 10:47am UTC](https://forum.mattermost.com/t/mtls-does-not-work-on-ios/23123/1 "2025-05-06T10:47:20Z")
Hi, I’ve used this guide to setup mTLS: [SSL client certificate setup - Mattermost documentation](https://docs.mattermost.com/onboard/ssl-client-certificate.html) This works flawlessly in browser and desktop client - I have a simple, additional layer of protection that is much easier to setup and distribute than VPN. But iOS app, despite importing p12 client certificate into system just refuses to connect. Note: I don’t want the enterprise feature to automatically log clients based on their certificates - I just want the app to use mTLS. Is this possible without enterprise license? ---
**Author:** ![imemyself](https://avatars.discourse-cdn.com/v4/letter/i/41988e/32.png) [@imemyself](https://forum.mattermost.com/u/imemyself)\ **Post date:** [June 17, 2025, 2:34am UTC](https://forum.mattermost.com/t/mtls-does-not-work-on-ios/23123/2 "2025-06-17T02:34:32Z")
Did you ever hear back about this or find a solution? I’m also trying to get this to work. This feature request was marked as completed, so it seems like Mattermost claims to have implemented this - [mobile client SSL authentication – Mattermost Feature Proposal Forum](https://mattermost.uservoice.com/forums/306457-general/suggestions/14756865-mobile-client-ssl-authentication) But it fails SSL negotiation, never prompts for a cert, and has no client configuration options to do so, so this can’t be working for enterprise servers either.