Hi! I’m just looking for a SIP provider so I can hook my phone to. Ideally with servers located in SE Asia for lower latency. Telnyx seems to have servers in Singapore, which seems convenient. Is it possible to prepay credit for SIP calls for a single account, then hook your phone with Linphone/Zoiper or similar and just use it for cheap international calling?

Alternatively, which other options you might suggest?

Thanks!