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What does it mean that Xiaomi Redmi k30 mobile phone does not display delivery after upgrading?

It should be that the sending settings of your mobile phone are not turned on. In SMS settings, send report is set to ON.

Redmi is a brand-new product line "Redmi" launched by Xiaomi Company on July 3, 200313. 201965438+1on the morning of October 3rd 10, Xiaomi Company officially announced that it would upgrade the Redmi series to an independent sub-brand of Xiaomi's mobile phone business. On June 20 19 10, 19, Xiaomi Company held an independent press conference of Redmi brand.

Short Message Service (SMS for short) refers to the text or digital information directly sent or received by users through mobile phones or other telecommunication terminals. The number of characters that users can send and receive SMS at a time is 160 English or numeric characters or 70 Chinese characters.