Don't have Telegram yet? Try it now!
https://thelatesttechnews.com/smartphones/android-news/download-open-beta-14-for-oneplus-6-and-beta-6-for-oneplus-6t-with-march-2019-security-patch/
Download Open Beta 14 for OnePlus 6 and Beta 6 for OnePlus 6T with March 2019 Security Patch