How to wean android ask permission for sms?

Question

Android

There is Android 4.2.1 and there is a problem. (device Umi x2 Chinese with alternative firmware) (there is a problem with the original firmware)
I use sms very actively, but because the native sms application starts to slow down mercilessly on 5k+ messages, you have to use alternatives.
And here a problem arises - with active sending, the phone starts to ask permission stably.
Of course, I set the application to always allow sending sms.
But after each request for permission, this setting flies. And manually returning it to the correct position does not really correct the situation.
If there is a lot of sms/short time, android gets stuck with requests and ignores manual settings by replacing them.
Please help if you know the solution.
ps Google for a long time, did not help.

Answer 1

Umi x2. At the very same. You have SuperUser or Permission Manager. If the second, then dig into it.
Yes, and here's more. What is the alternative firmware?

Answer 2

I have a limit on the number of messages in CyanogenMod. A maximum of 500 messages can be set in 15 minutes. Even if there is no unlimited in SM, I'm not sure that you can find some solution. If an alternative application does not help, then the system is to blame and you need to dig into it.
habrastorage.org/storage3/586/51d/e11/58651de11631ab5637a76ad89a26b795.png
Limiting SMS messages (at the very bottom of the screen)
PS: There is no CyanogenMod for your device.