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Firefox says my phone number is not valid

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Each time I try to comply with login Firefox tells me my cellphone number is not valid.This on my PC

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You can't specify a country code (+xx) if that is what you are doing and Firefox only accepts a phone number in your current region. If you use a proxy or VPN then the server might get confused.

Note that you do not need to supply a phone number, using Sync and adding more devices is optional and you can close the tab. Then phone number is only used to send a link to the device to install Firefox on this device, so is not really necessary.

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Chosen Solution

You can't specify a country code (+xx) if that is what you are doing and Firefox only accepts a phone number in your current region. If you use a proxy or VPN then the server might get confused.

Note that you do not need to supply a phone number, using Sync and adding more devices is optional and you can close the tab. Then phone number is only used to send a link to the device to install Firefox on this device, so is not really necessary.

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