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October 19, 2025
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using my phone internationally

  • October 19, 2025
  • 9 replies
  • 430 views

I’ve recently had phone problems and had to rely on intermittent wifi while accidently going over my cap when I was travelling in Peru a few weeks ago.  I’m anxious to avoid this happening again when I travel to Vietnam and Cambodia next month. Please could you direct me to the best source of information? I’ve tried searching myself but haven’t found specific advice for these countries. Thank you. Sue Watling.   

    Best answer by WelshPaul

    If you set your bill cap to zero, you won’t be able to use your phone in Vietnam or Cambodia. However, if you raise your bill cap, you’ll pay £9.60 per MB for data in Vietnam, which equates to a staggering £9,830.40 per GB. You would quickly exceed your spend cap, resulting in a large bill and loss of service while abroad.

     

    Roaming charges in Cambodia.

    The table below displays how much you’ll be charged for any minutes, texts or data that you use.

    Roaming Pay monthly Pay-as-you-go****
    Calls to UK* £2.40 £2.40
    Calls to Cambodia* £2.40 £2.40
    Calls received* £2.40 £2.40
    Texts to Cambodia** £0.60 £0.60
    Texts to UK** £0.60 £0.60
    Picture message (MMS) sent** £0.60 £0.60
    Internet and Data (per MB)*** £1.50 £1.50

    * Price per minute

    ** Please note: MMS charges vary. For further information, refer to Terms & Conditions. If you joined or upgraded on or before 20th June 2023 the MMS cost is £0.30 per message for Roaming within EU Bands 1 and 2.

    *** Data is charged or deducted in one kilobyte (KB) increments and any part KB used will be rounded up to the nearest KB

    **** The charges below will apply to all Pay-as-you-go customers starting from 1st October 2024. Find out more about the current charges here.

    Prices shown include VAT where applicable.

     

    Roaming charges in Vietnam.

    The table below displays how much you’ll be charged for any minutes, texts or data that you use.

    Roaming Pay monthly Pay-as-you-go****
    Calls to UK* £6.00 £6.00
    Calls to Vietnam* £6.00 £6.00
    Calls received* £1.50 £1.50
    Texts to Vietnam** £1.20 £1.20
    Texts to UK** £1.20 £1.20
    Picture message (MMS) sent** £0.60 £0.60
    Internet and Data (per MB)*** £9.60 £9.60

    * Price per minute

    ** Please note: MMS charges vary. For further information, refer to Terms & Conditions. If you joined or upgraded on or before 20th June 2023 the MMS cost is £0.30 per message for Roaming within EU Bands 1 and 2.

    *** Data is charged or deducted in one kilobyte (KB) increments and any part KB used will be rounded up to the nearest KB

    **** The charges below will apply to all Pay-as-you-go customers starting from 1st October 2024. Find out more about the current charges here.

    Prices shown include VAT where applicable.

    9 replies

    WelshPaul
    Platinum 
Contributor
    Platinum 
Contributor
    October 19, 2025

    Roaming charges in Peru.

    The table below displays how much you’ll be charged for any minutes, texts or data that you use.

    Roaming Pay monthly Pay-as-you-go****
    Calls to UK* £6.00 £6.00
    Calls to Peru* £6.00 £6.00
    Calls received* £2.40 £2.40
    Texts to Peru** £1.20 £1.20
    Texts to UK** £1.20 £1.20
    Picture message (MMS) sent** £0.60 £0.60
    Internet and Data (per MB)*** £15.00 £15.00

    * Price per minute

    ** Please note: MMS charges vary. For further information, refer to Terms & Conditions. If you joined or upgraded on or before 20th June 2023 the MMS cost is £0.30 per message for Roaming within EU Bands 1 and 2.

    *** Data is charged or deducted in one kilobyte (KB) increments and any part KB used will be rounded up to the nearest KB

    **** The charges below will apply to all Pay-as-you-go customers starting from 1st October 2024. Find out more about the current charges here.

    Prices shown include VAT where applicable.

    I have no affiliation whatsoever with iD Mobile or any subsidiary companies. Comments posted are entirely of my own opinion. Did my comment help answer your question? If so, don't forget to mark the response as the Most Helpful Answer.
    WelshPaul
    Platinum 
Contributor
    Platinum 
Contributor
    October 19, 2025

    Roaming in Peru is very expensive. For just 1GB of data, you’ll be billed £6,144. I recommend getting a local pay-as-you-go SIM card instead.

    I have no affiliation whatsoever with iD Mobile or any subsidiary companies. Comments posted are entirely of my own opinion. Did my comment help answer your question? If so, don't forget to mark the response as the Most Helpful Answer.
    New Contributor
    October 19, 2025

    Thank you for the prompt reply. Please could you give me the charges for Vietnam and Cambodia or send a link to the relevant information. Thanks, Sue

    iD Mobile Employee
    October 19, 2025

    Hi, ​@suewatling 

     

    Thank you for reaching out, Sue. I completely understand your concerns about avoiding unexpected charges during your upcoming travels to Vietnam and Cambodia. Given your recent experience in Peru, it’s definitely wise to plan ahead for a smooth and cost-effective journey.

    To help prevent this from happening again, I recommend setting your spending cap to £0 while you’re abroad. This will stop any accidental charges from occurring. You can easily do this by visiting the following link:

    https://www.idmobile.co.uk/help-and-advice/international-and-roaming-charges

    If you need any further advice or assistance, please don’t hesitate to get in touch to us via our Socials (Facebook or Instagram), Live Chat, Community or email us at socialqueries@idmobile.co.uk.

     

     

    Thank you,

    Zandile

    iD social media

     

     

     

     

     

    Did my comment help answer your question? If so, don't forget to mark the response as the Most Helpful Answer.
    WelshPaul
    Platinum 
Contributor
    Platinum 
Contributor
    October 19, 2025

    Thank you for the prompt reply. Please could you give me the charges for Vietnam and Cambodia or send a link to the relevant information. Thanks, Sue

    You can look up the charges using the link below:

    https://www.idmobile.co.uk/help-and-advice/international-and-roaming-charges
     

    Just click on Roaming charges and select your country of choice.

    I have no affiliation whatsoever with iD Mobile or any subsidiary companies. Comments posted are entirely of my own opinion. Did my comment help answer your question? If so, don't forget to mark the response as the Most Helpful Answer.
    New Contributor
    October 19, 2025

    Thank you Zandile, I hadn’t come across setting the cap to zero although I’ve just read on https://www.idmobile.co.uk/help-and-advice/international-and-roaming-charges  If you're somewhere else [outside of Inclusive Roaming destinations] you won't be able to use your phone with a £0 bill cap, as your activity will be classed as international roaming, and any usage will be chargeable. 

    I wanted to avoid being totally reliant on wifi as happened when I was disconnected in Peru, so am thinking I need to allow data roaming once I’ve arrived in Vietnam in order to connect locally and then turn the roaming off unless I need to use an internet connection. Does that sound appropriate? 

    Regards

    Sue    

     

    WelshPaul
    Platinum 
Contributor
    WelshPaulAnswer
    Platinum 
Contributor
    October 19, 2025

    If you set your bill cap to zero, you won’t be able to use your phone in Vietnam or Cambodia. However, if you raise your bill cap, you’ll pay £9.60 per MB for data in Vietnam, which equates to a staggering £9,830.40 per GB. You would quickly exceed your spend cap, resulting in a large bill and loss of service while abroad.

     

    Roaming charges in Cambodia.

    The table below displays how much you’ll be charged for any minutes, texts or data that you use.

    Roaming Pay monthly Pay-as-you-go****
    Calls to UK* £2.40 £2.40
    Calls to Cambodia* £2.40 £2.40
    Calls received* £2.40 £2.40
    Texts to Cambodia** £0.60 £0.60
    Texts to UK** £0.60 £0.60
    Picture message (MMS) sent** £0.60 £0.60
    Internet and Data (per MB)*** £1.50 £1.50

    * Price per minute

    ** Please note: MMS charges vary. For further information, refer to Terms & Conditions. If you joined or upgraded on or before 20th June 2023 the MMS cost is £0.30 per message for Roaming within EU Bands 1 and 2.

    *** Data is charged or deducted in one kilobyte (KB) increments and any part KB used will be rounded up to the nearest KB

    **** The charges below will apply to all Pay-as-you-go customers starting from 1st October 2024. Find out more about the current charges here.

    Prices shown include VAT where applicable.

     

    Roaming charges in Vietnam.

    The table below displays how much you’ll be charged for any minutes, texts or data that you use.

    Roaming Pay monthly Pay-as-you-go****
    Calls to UK* £6.00 £6.00
    Calls to Vietnam* £6.00 £6.00
    Calls received* £1.50 £1.50
    Texts to Vietnam** £1.20 £1.20
    Texts to UK** £1.20 £1.20
    Picture message (MMS) sent** £0.60 £0.60
    Internet and Data (per MB)*** £9.60 £9.60

    * Price per minute

    ** Please note: MMS charges vary. For further information, refer to Terms & Conditions. If you joined or upgraded on or before 20th June 2023 the MMS cost is £0.30 per message for Roaming within EU Bands 1 and 2.

    *** Data is charged or deducted in one kilobyte (KB) increments and any part KB used will be rounded up to the nearest KB

    **** The charges below will apply to all Pay-as-you-go customers starting from 1st October 2024. Find out more about the current charges here.

    Prices shown include VAT where applicable.

    I have no affiliation whatsoever with iD Mobile or any subsidiary companies. Comments posted are entirely of my own opinion. Did my comment help answer your question? If so, don't forget to mark the response as the Most Helpful Answer.
    iD Mobile Employee
    October 19, 2025

    Hi, ​@suewatling 

    You’re absolutely right when you’re outside the Inclusive Roaming destinations, like in Vietnam, your usage will be considered international roaming and charged accordingly. Setting your spending cap to zero will block all usage, including roaming, so it’s important to manage this carefully.

    Your plan to enable data roaming once you arrive in Vietnam and then turn it off when not needed is a very sensible approach. This way, you can connect to local networks when necessary without being completely reliant on Wi-Fi, and you can control your data usage to avoid unexpected charges.

    To help prevent accidental charges, you can set your spending cap on your account. Simply log in to the iD Mobile app, go to the “Manage your account” section, select “Spending cap,” and adjust it to £0. This will block any unexpected usage while you’re abroad.

     

    If you need any further assistance, please get in touch via our Socials (Facebook or Instagram), Live Chat, Community or email us at socialqueries@idmobile.co.uk.

     

    Thank you,

    Zandile

    iD social media

    Did my comment help answer your question? If so, don't forget to mark the response as the Most Helpful Answer.
    New Contributor
    October 19, 2025

    Thank you so much, Zandile, that's really helpful and much appreciated 😃