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Using eSIM on my phone for SO's banking apps and my physical SIM for my banking apps

I'm hoping someone with a good knowledge about eSIMs might be able to help — my SO lost their phone a few weeks back, and it was a total nightmare... New phone now, so all is good. 

BUT as I'm the one who does both mine and their banking online and using apps, would it be possible to put their mobile phone number on my phone that has (I've just discovered!) an eSIM 'port' (?)? So, for example, let's say we both bank with HSBC, and I look after the money management of both accounts. Would I be able to use the HSBC app for TWO different mobile numbers on my iPhone, for mine and their HSBC banking? 

Am I living in cloud-cuckoo land? Am I even making sense?!


Comments

  • TadleyBaggie
    TadleyBaggie Posts: 6,729 Forumite
    Part of the Furniture 1,000 Posts Photogenic Name Dropper
    Should work fine.
  • PHK
    PHK Posts: 2,392 Forumite
    Eighth Anniversary 1,000 Posts Photogenic Name Dropper
    This won't work for various reasons. 

    Putting their phone number on your phone (via physical or eSIM) will mean their phone has no number. 

    Also, banking apps don't just use the phone number to verify a customer, but also verify the phone using it's serial number, a token in the secure enclave and firmware version. (Most banks will detect you doing this)

    Also, not every phone will allow you to have two copies of the same app. 

    Also, banks would prefer that your SO added you to the account so that you can do this without pretending to be them. In which case the account will show up in your app without needing to use tricks. 
  • PowerSavingMode
    PowerSavingMode Posts: 331 Forumite
    Part of the Furniture 100 Posts Name Dropper Combo Breaker
    PHK said:
    This won't work for various reasons. 

    Putting their phone number on your phone (via physical or eSIM) will mean their phone has no number. 

    Also, banking apps don't just use the phone number to verify a customer, but also verify the phone using it's serial number, a token in the secure enclave and firmware version. (Most banks will detect you doing this)

    Also, not every phone will allow you to have two copies of the same app. 

    Also, banks would prefer that your SO added you to the account so that you can do this without pretending to be them. In which case the account will show up in your app without needing to use tricks. 
    Thank you for this. My brain is fried ATM, and this makes more sense than my post did. It wasn't the banking, necessarily, it's for the savings accounts — so we can both each have an individual savings account with relevant banks/building societies to maximise interest...

    So the only other viable option is to buy a new (second-hand, more likely, for this purpose) phone so it has its own dedicated number, it seems. 
  • born_again
    born_again Posts: 21,235 Forumite
    10,000 Posts Sixth Anniversary Name Dropper
    In terms of the banking side. You should not be running anyone else sole accounts. Unless you have POA. 
    Life in the slow lane
  • J_B
    J_B Posts: 6,868 Forumite
    Part of the Furniture 1,000 Posts Name Dropper Photogenic
    In terms of the banking side. You should not be running anyone else sole accounts. Unless you have POA. 
    Mrs B has PoA for her mum's Lloyds account - it can only be accessed from the PC and not on her mobile app

  • PHK
    PHK Posts: 2,392 Forumite
    Eighth Anniversary 1,000 Posts Photogenic Name Dropper
    PHK said:
    This won't work for various reasons. 

    Putting their phone number on your phone (via physical or eSIM) will mean their phone has no number. 

    Also, banking apps don't just use the phone number to verify a customer, but also verify the phone using it's serial number, a token in the secure enclave and firmware version. (Most banks will detect you doing this)

    Also, not every phone will allow you to have two copies of the same app. 

    Also, banks would prefer that your SO added you to the account so that you can do this without pretending to be them. In which case the account will show up in your app without needing to use tricks. 
    Thank you for this. My brain is fried ATM, and this makes more sense than my post did. It wasn't the banking, necessarily, it's for the savings accounts — so we can both each have an individual savings account with relevant banks/building societies to maximise interest...

    So the only other viable option is to buy a new (second-hand, more likely, for this purpose) phone so it has its own dedicated number, it seems. 
    Why not just let your SO manage their own affairs using their phone. 

    Perhaps talk to each other to coordinate anything you want to do together. 
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