Unable to send SMS from RUT200 with Lyca Sim

[iesdave]

Hi,

I am unable to send SMS messages from a RUT200 using a Lyca SIM, but the RUT200 is able to receive SMS messages ok on the Lyca Sim.
If I put Lyca SIM in my iphone it sends and receives SMS messages.
If I put the O2 SIM from my iphone into the RUT200 it sends and receives SMS messages.

This has been tested using Services>Mobile Utilities>Messages.
When I try to send a SMS I get the following error ‘Failed to send message’.

System>Maintenance>Events Log shows the SMS to the Lyca SIM being received but does not show the SMS send attempt or any fault.

I’ve tried rebooting and factory reset etc.

I have spoken with Lyca support and the suggest changing the message centre number, but I cannot see how to do this.

Firmware version: RUT2M_R_00.07.10
Internal modem firmware version: EC200AEUHAR01A22M16_01.200.01.200

Many thanks,

David.

[Marija]

Hello,

Please log in to your device’s WebUI, navigate to Network → Mobile → Connection, and under Preferred Network Type, select 3G only or 2G only. Try to send an SMS and let me know if the issue persists.

Best regards,

[iesdave]

Hi Marija,

Thank you for your help.

The SMS sends ok on the LYCA sim (on EE network) if Preferred network type is set to 3G/2G auto but 2G and 3G are due to be switched off in 2025. Can this SIM be made to work in 4G with the LYCA SIM ?

David.

[iBoucher]

Hi, please try to turn off VoTE. If it not help, please try to turn it on. In short, please try both settings.

[iesdave]

Hi iBoucher.

I have turned VoLTE to OFF.
I can now send SMS messages with Preferred network type is set to 4G/3G/2G auto.

Thank you.

David.

[iBoucher]

Great news!