Asda Mobile UK eSIM Keep-Number Guide: Low-Cost Giffgaff Alternative and Official Top-Up Rules

Asda Mobile online eSIM signup and keep-number notes, with official terms checked for the £5 minimum top-up (not the source’s £2 claim) and 180/270-day rules; T

What this guide covers

Source author @Wangdaso (long-form, 2026-07-27) positions Asda Mobile as a lower-cost UK number / SMS / keep-number option versus Giffgaff: checkout can select eSIM, avoiding physical-SIM shipping and native-device extract/convert steps.

This article checks official pages and terms. It does not invent personal tests. Claims such as a £2 minimum top-up or successful Telegram/WhatsApp signup are labeled as the source author’s report; where they conflict with Asda documents, the official text wins.

Official: Asda Mobile · Topping up · Rates & charges · Terms PDF

Official checks (important)

| Topic | Source post | Official check (at capture time) | | --- | --- | --- | | Online top-up minimum | £2 | Terms 4.2: £5 minimum, £50 maximum per transaction; £500 balance cap | | Keep number | Paid use every 180 days | Support: chargeable call or text every 180 days; ~270 days idle can bar service and delete the number | | eSIM | Available at checkout | Homepage states eSIM at checkout; per-plan availability follows the live basket | | Cards | Try foreign / crypto cards | Source also notes UK-issued cards are preferred; overseas cards are not guaranteed | | TG / WA | Author success | Anecdote only |

A screenshot showing a £2.00 balance does not override the contractual £5 minimum purchase for a top-up. Verify the live Top-up UI before paying.

Official FAQ screenshots on 180/270-day rules

Who it may suit

Maybe: You need a UK mobile number for SMS/signup, accept PAYG, can supply a usable UK address, and have a card that clears payment.

Caution: Heavy UK data needs, reliance on non-UK cards, no usable UK address, or a must-have physical SIM. Do not assume international cards that work on Giffgaff will clear Asda.

Asda Mobile runs on a Vodafone partner network. Roaming rates vary—turn data roaming off for keep-number use.

Before you buy

  • eSIM-capable phone or writer (author used an iPad writer—author’s setup only)
  • Email
  • Payment card (checkout shows Visa/Mastercard; UK-issued more reliable per source/terms context)
  • Stable network
  • Real UK billing/contact address—never fabricate
Checkout plan example from source
Select eSIM at checkout

Buy and install

  1. Open mobile.asda.com and pick a PAYG-style plan.
  2. Source used a cheaper Talk & Text-style plan (~£4/month then—confirm live).
  3. At checkout choose eSIM; disable auto-renew if you do not want recurring charges.
  4. Enter details, create the account, pay.
  5. After confirmation, sign in at My Account, open eSIM, scan the QR code.
Checkout/payment screens—never share real card data
My Account eSIM menu
Install-related UI
Account/plan UI

Turn off auto-renew

The first month mainly opens the number. For SMS-only keep-number use, disable Recurring / Auto-renew in My Account. Exact labels follow the live page.

Top-up and keep-number (official)

  • Online top-up: £5–£50 per transaction per terms—not the source headline’s £2.
  • Monthly plans ≠ PAYG credit. Follow both “periodic top-up/plan” and “chargeable use” rules on the support pages.
  • Practical keep-alive: about every 150 days, send one chargeable SMS to a normal UK mobile (~£0.10/SMS on the public rates table—re-check).
  • Powering on, receiving free SMS, or Wi-Fi alone may not count.
Top-up / balance UI from source
Rates / keep-number related shot
Additional process shot

Roaming and data

PAYG data can be expensive (author cited high per-MB notices—confirm your SMS and the rates page). For keep-number: disable Asda mobile data and data roaming; enable only to send the keep-alive SMS; be careful with inbound roaming calls abroad.

Do not casually delete the eSIM

QR codes may have install limits. Before wiping a phone, check transfer options in-account or with support. Turning a line off ≠ deleting the eSIM profile.

Source app tests (not ours)

The author reported Telegram and WhatsApp SMS signup success. This guide does not claim the same outcome for you.

Checklist

  1. Plan → eSIM at checkout → pay (approval not guaranteed).
  2. Install from My Account; disable unwanted auto-renew.
  3. Keep PAYG credit with the official £5+ top-up and periodic chargeable use.
  4. Disable data roaming; do not casually delete the eSIM.
  5. Treat £2 and TG/WA success as anecdotes.

Sources

  • Source post: https://x.com/Wangdaso/status/2081578093173453158 (@Wangdaso; no invite codes)
  • Official Asda Mobile site, Topping up, Rates & charges, Terms §4.2 (£5 minimum top-up)
  • BiyaPay not involved. Re-check live pages before ordering.