Mexico Plan Not Working; Canada/US Plan is Fine

[Mer96]

Switched to Telus EPP program from Rogers and haven’t been happy since. Currently have two Identical phones, under same account one with CAN-US plan and my wife's with CAN-US-MEX plan, as of writing this we are in Guadalajara - I turned on my roaming just to check and verify in which Telus gladly charged me a day rate as normal but connected flawlessly with full signal on LTE to TELCEL.  However with her phone which has Mexico plan included been struggling to connect to ANY network. Tried manually selecting TELCEL - nothing happens. Have tried everything possible. Have screenshots of both phones to prove this, basically paid roaming $16 a day works fine full coverage, phone with MEX plan wont connect to TELCEL. No it’s not the phone, and no it’s not TELCEL

Not to mention the connectivity issue on 5G within Canada and LTE slowly at times within Canada. Has anyone experienced this problem?

[Syaoran]

What devices are you using?  Were they purchased from Telus or another Canadian carrier? 

VoLTE and band compatibility while roaming can be hit or miss.  Do you have data roaming turned on in the Settings of both devices? 

[Mer96]

Iphone 15 both purchased from Telus under same account. I have identical settings on both phones. My phones fine with paid roaming, wife’s phone that has MEX plan wont connect not even manually to TELCEL nothing happens- I can see the option of selecting but wont connect. Only difference I see is under about > carrier I am using Telus 61.0 and shes on 62.0 not sure the difference 

[Syaoran]

Makes me wonder if it is SIM related.  If the SIM in the device not connecting to the roaming partner is a few years old or older.  That might be the issue.  You might also want to check with Customer Care to make sure there are no roaming restrictions account side on the line experiencing the issues.