1
Check your phone
Most recent phones take an eSIM next to a physical SIM. Look in Settings for “Add eSIM”.
Your data line.
Your main SIM stays exactly as it is. Add Boundless next to it for unlimited 5G data, with its own new number.
2
Pick a plan
Your eSIM QR code is emailed within 3 hours (9am–5pm, Mon–Fri), or we post a SIM within 48 hours.
3
Choose what each line does
Data on Boundless, calls on your main number, or any mix you like.
Why a data line?
Most plans ration data. Boundless doesn’t. Put your data on us and your main plan just does calls.
- Never run out. Unlimited 5G data in the UK for £15 a month.
- Built for heavy AI use. Live voice assistants, camera translation, uploading photos and video to AI apps all day. Unlimited means you never ration it.
- Hotspot anything. Run AI tools on your laptop from anywhere. Tether as much as you like.
- Stay in your deal. No exit fee, nothing to cancel, your main SIM stays exactly as it is.
- Europe without the daily charge. On £20, 35GB of data a month across the EU and EEA.
- A number you can hand out. For selling online, side work or anything you’d rather keep apart.
Things people ask.
Can I bring my current number?
Not on these plans. Boundless comes with a new number, and your current one stays on your current SIM.
Will the two lines clash?
No. Your phone shows both and lets you choose which handles data and which handles calls and texts.
What if my phone only takes one SIM?
Email us your phone model before you order and we’ll tell you straight.