UK SIM not working in Australia

[BrianLom_115489]

Since arriving in Australia, I've been unable to use my Smarty UK SIM (just required for 2-step banking authentication etc as I have a local SIM for calls, texts and data).

The SIM is recognised by my phone and multiple local phone signals are identified but for some reason I can't connect to any of them.

The APN is now set to mob.asm.net but the change was made post-arrival in Australia - could this be the source of the problem?

I've tried toggling all of the various settings on and off but without success.

My local Aussie SIM works fine in my Poco F3 but it stops working when my Smarty UK SIM is added to slot 2 - my Smarty SIM is therefore currently residing in my old Motorola g(8).

I was last in Australia in April 2024 and my Smarty SIM was connecting without any issues at that time. In the meantime, the 3G network has been turned off in Australia. I mention this in case it is significant but as the settings on my 2x phones allow me to select 5G (Poco F3) and 4G/LTE (Motorola g(8)), I assume this is not the root cause of the problem.

I don't know if it's relevant but I should also note that I was unable to connect to either WiFi or mobile data while on the train to the UK airport.

Ideally, a solution to this problem can be found but, if not, what are my options?

1. Smarty could send a replacement SIM to my UK address for a relative to post to Australia (it probably wouldn't arrive until after Christmas)

2. Is it possible sms messages to be forwarded to another number (similar to call forwarding for voice calls)?

3. I could do nothing (not a great option as I'm staying in Australia until after Easter 2025)

4. Are there any other options?

All suggestions welcome.

TIA

[SmartyTrousers]

I'm not sure why adding your Smarty SIM to your Poco stops it working if it connects to the Oz networks with an Oz SIM, but the reason your Motorola won't connect may well be related to the 3G switch off there.

Not only have they switched off 3G, but the networks have also blocked any phones connecting if they aren't confident that that phone can make emergency calls over 4G. This has led to hundreds of thousands of phones there being blocked from connecting to their networks, and also impacts some tourist phones. Here's a video with more info.

In answer to some of your questions, unfortunately there is no facility to forward SMS to another number like there is with calls.

I doubt getting a new Smarty SIM will make any difference.

If you mainly just needed your Smarty SIM for 2FA codes, can you use some other 2FA method, such as an app?

[DavidFa_1123614]

Hi , Thanks for your referral to the YouTube  on the topic it has answered my query as to why we had two phones not connecting in OZ despite working faultlessly in the USA, Hawaii and New Zealand over the last few weeks, nothing worse than turning up at Sydney airport and getting no connection.

my Airalo data  e-SIM finally connected after two attempts  but now left without a working voice or text option. Although my phone does come up with an SOS only  option I am loath to try it.

you did put an end to a weeks worth of rebooting and resets so so I am grateful to you.

[DavidFa_1123614]

Hi Brian, just had exactly the same problem with two iPhones with Smarty sims.

I now know this is due to the smarty sim being 3G based and the fact that our  iPhones are ‘foreign’ despite being 4G compatible.

i had a similar problem in the USA in April but this was not a problem a few weeks when arriving there a few weeks back.

After 2 attempts I did manage to get my 5G Airalo data e-sim to work so we are not completely stuck . It is however very frustrating. There really should be a warning about this as it has taken me a week before finding your post and smartytrousers reply to get to the bottom of if it.

it appears that putting an Australian e-sim or SIM card may not overcome the problem as the IMEI number identifies it as a  ‘foreign’ phone.