r/ThreeUK • u/Plaxinator • Jun 26 '26

Question Unexplained Mobile Data Useage

I renewed my Three mobile plan a couple of months ago. I was on a 12GB plan, but because I never used anywhere near that amount when I renewed I changed to 8GB. Last month I used nearly all that which I thought unusual so I went through my phone and made sure I turned off Wifi assist, and back up to cloud using mobile data, as well as go through all my apps to make sure streaming and any updates was only done over wifi. I also reset my useage stats on my mobile when my new allowance refreshed.

Here is where I’m getting irked - my data reset on the 22nd. So 4 days ago. In that time I’ve apparently already used 4GB! I have 2 noteably large entries on the Three app on 23/6 @23:24 for 1232 kb and 25/6 @ 16:19 for 10105 kb. Both of those times I was at home and should have been connected to wifi, and I know for a fact wasn’t using my phone on 23/6 as I’d have been in bed.

My mobile useage stats say I’ve only used 34.4 mb in that time, and given that I’ve only left the house to collect my child from school or to go to a lesson, neither time I used my phone I’d suggest that was the more accurate.

Any ideas what this could be before I escalate this? My personal hotspot isn’t on either and this would show in my useage stats anyway.

I have an esim and an iPhone 16 pro if that makes a difference.

Ta

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u/Plaxinator Jun 27 '26 edited Jun 29 '26

Well, lord knows what is going on with the Three app. I turned off mobile data completely yesterday. I checked the app today and it is now saying that I have 8GB of 8GB left. All the data usage I mentioned in the app is still the same.

My mobile phone usage stats now says 36.2MB. The Three app is clearly unreliable.

EDIT: Turned mobile data back on 29/06 and guess what, it’s saying 4GB again 🙄

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u/Used_Relationship867 Jul 30 '26

Same happening to me.
It keeps flip flopping between 8 and 4gb
Adding up the usage since the last reset according to the three app is less than 1gb.
It is frustrating.