SMS blocking/rejecting may not work the way you want/hope.
SMS blocking/rejecting is done by the SMS app you are using.
The SMS message is always delivered to your phone.
After the message arrives, the SMS app will compare the "from" with the block list.
If the "from" is on the block list, the message will be silently discarded by the SMS app.
If the "from" is not on the block list, the SMS app will store the message in the database and notify you of a new message.
The SMS block list is managed separately from the phone-call block list.
The SMS app I am using is the default that came with Android 5, and it has no blocking feature...neither does the stock phone dialer for that matter. Which is why I'm looking for a replacement. I want to replace the stock SMS app and phone dialer app with something that can block number. When I am in SMS, I want to be able to select a message and block the sender.
I don't want to have to memorize the number, or jot the number down on paper, just so I can launch the phone dialer, and find the number that sent the sms message, to block it. I've been trying various apps, and so far the only app that handles both SMS and phone dialing that I've found is TrueCaller.
However, TrueCaller keep choking every time I try to send an SMS. It appears to send the message, then a few minutes later it reports back that the message was not sent, with no info as to why.
Apps like "Should I Answer" are not replacements, they run in tandem with the stock phone dialer and SMS messenger. They are an extra, and significant drain, on the battery.
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