Unknown Caller
06 Oct 2025
Claims to be 3 mobile network
Community overview
Community rating:
Limited data
2 user reports
First reported 6 Oct 2025
·
Last reported
12 months
ago
About this number
Number formats
- UK format: 020 8150 5306
- International: +44 20 8150 5306
Number details
- Number type: Landline
- Number range allocated to: Gamma Telecom Holdings Limited
- Area: London
- Area code: 020
User Reports (2)
Scam/Fraud
06 Oct 2025
Pretending to be 3 mobile and telling you about a phone upgrade
Report this number: 020 8150 5306
Did this number contact you?
You’ve already submitted a report for this number.
Your report may still be going through moderation before it appears publicly.
Your report
How did they contact you?
How would you describe the contact?
Please do not include full names, private addresses, or abusive, hateful, or defamatory content. Please read our Community Standards before posting.
Thank you. Your report has been received.
Before appearing publicly on the site, reports may be reviewed and checked as part of our moderation process.
How to Block This Number
On iPhone
- Open the Phone app and go to Recents
- Find the number 020 8150 5306 and tap the info icon (i)
- Scroll down and tap Block this Caller
- Confirm by tapping Block Contact
On Android
- Open the Phone app and tap the 3-dot menu
- Go to Call history or Recents
- Long press on 020 8150 5306
- Select Block number or Block/report spam
On Landline Phones
Several options are available for UK landlines:
- BT Call Protect - free for BT customers
- TalkTalk CallSafe - free for TalkTalk customers
- Call blocking devices like CPR Call Blocker (available on Amazon)
Register with TPS (Telephone Preference Service)
The TPS is a free service for UK consumers that allows you to opt out of unsolicited sales and marketing calls.
Learn more about TPS registration