Phone Authentication Provider Problem

Do We need to take DLT certificate for Phone Authentication Provider ? , Which Otp Privider is cheap and best with appwrite mobile authentication.

TL;DR

The user is asking if they can change the message provider in the future for the same project. The response states that there is no comparison list for which vendor is better or worse. It is recommended to research the options and choose accordingly. The user asks for a suggestion for the best and cheap provider for an Indian app. The response suggests using whatever suits their needs and is supported. The user mentions that Twilio is expensive and mentions msg91, but they require DLT permission. The response doesn't have an idea but suggests researching on the internet. The user asks if a DLT certificate is needed for Phone Authentication Provider and for the cheapest

I dont have an idea but you can see the discussion about it here https://discord.com/channels/564160730845151244/564160731327758347/994283920680034354 and for second part, maybe use Twilio or sendgrid? but you can research on the internet