https://us.community.samsung.com/t5/Galaxy-S21/Read-Receipts-Delivered-Typing-not-available-in-Messages/m-p/1707519#M7015 my device is unlocked by Samsung. but have it under the same carrier with my partner , which is T-mobile but yet he still cannot see my read messege nor can I . it's ridiculous if samsung does this even If the phone is umlocked Tue, 16 Feb 2021 23:15:12 GMT MariaJM 2021-02-16T23:15:12Z