How to set TTL for mobile operators correctly?

Question

Computer networks

Hello.
I want to share the internet from my sim card with my home network.
There is a Wi-Fi modem for a SIM card and a Mikrotik router, to which all network devices are connected. The modem is connected to the Mikrotik in the WAN input.
I read that TTL should be set to 64.
Both the modem and Mikrotik allow you to change the TTL values.
Should I bother and change the TTL on a Mikrotik or is it enough only on a modem?

Answer 1

Where you change doesn't matter.
Depending on the operator, imei flashing or other additional measures may be required, I recommend studying the topic https://w3bsit3-dns.com/forum/index.php?showtopic=689378

Answer 2

I would add to the firewall:

/ip firewall mangle
add action=change-ttl chain=prerouting new-ttl=increment:1 passthrough=yes

But, yes, this may not be enough and you have to bother with IMEI