Apple Watch Error Code 10 on eSIM Activation – Stuck in Tech Support Loop

[Intrepid86]

Evening all,

I’m currently stuck in a 10-day tech support hole with O2, and it’s only getting deeper by the day!

I’ve been trying to activate mobile services on my refurbished Apple Watch Series 9, but I keep hitting Error Code 10 each time. According to what I’ve found in the help guides on the forums, the solution seems straightforward – the eSIM has been activated too many times and now needs a background reset. However, explaining this to customer service has been an uphill battle.

I’ve spent hours on the phone with at least half a dozen agents, and none of them seem to fully understand the issue. One did raise a technical case, but it’s now in its second week, despite being told it would take 7 days at the absolute most.

On today’s call, I tried to clarify that what’s needed is a reset of the eSIM, but instead, the operator added a watch tariff to my account. She assured me that this would solve the issue, yet the EID was never requested. I have my doubts that simply adding a tariff will fix anything, and I’m concerned I now have an extra account for no reason.

Has anyone else faced similar issues with Error Code 10 on eSIM activation? Any advice on how to escalate this to the right technical team would be much appreciated!

Thanks in advance for any help!

[Oxonian · Accepted solution]

Welcome to this O2 customer to customer community @Intrepid86. Unfortunately, the nature of this community means that we cannot access your account or offer other direct help.

You firstly need to work through :-

Activate Apple Watch Guide 

If that does not resolve your issue, you need to contact O2 and I suggest that you message them on social media :-

Facebook : https://o2uk.co/O2CFB

X (previously known as Twitter) : https://o2uk.co/O2CTW

Instagram : https://o2uk.co/O2CIG

The social media team are based in the UK and have a strong record for solving customer problems. 

[lele_ck]

hi! just wanted to ask if this problem got resolved? i am hit with the same thing and I don't know what to do

[MI5]

Full details of what to do directly above your post @lele_ck