About Sky
Sky Mobile is an MVNO operated by Sky UK (owned by Comcast) and runs on O2's network. Launched in 2017, Sky Mobile's signature feature is Piggybank — unused data automatically rolls over and can be stored for up to 3 years, or traded for up to £50 off a new device. Sky Mobile is particularly strong for existing Sky TV and broadband customers who get combined billing and discounts.
Plans
We don't list live prices — they change frequently. Below we explain how each plan type works.
Sky Mobile's 'Mix' plans are flexible — you can change your data allowance every month without penalty. Tiers from 1GB to Unlimited. All include unlimited calls and texts. Piggybank data rollover on all non-unlimited plans. Note: Sky Mobile applies RPI-linked price changes with 30-day notice and a penalty-free exit right.
Sky Mobile's 'Swap12' scheme lets you upgrade to a new phone every 12 months by returning your current device in good condition — no need to pay off the remaining balance. Device plans run 24–36 months. Billing can combine with Sky TV and broadband.
Sky Mobile doesn't offer traditional PAYG — its 30-day Mix plans function similarly and can be changed month-to-month, offering similar flexibility without a traditional top-up mechanic.
Sky Mobile supports eSIM on compatible devices (recent iPhones, selected Android). Activate through the Sky Mobile app.
Coverage & 5G
Sky Mobile runs on O2's network — 99% population 4G coverage and 5G access via O2's network. Use O2's coverage checker for accurate results. Coverage mirrors O2 direct.
Roaming Abroad
Sky Mobile does NOT include EU roaming free — unlike O2 direct which includes it on all plans. A daily charge applies for EU roaming unless you have a Roam add-on. This is a significant difference from O2 despite running on O2's network. For EU travel, O2 direct or Tesco Mobile are better options.
Key Features
Piggybank 3 Years
Unused data automatically saved — store for up to 3 years. Share across 7 SIMs. Trade for up to £50 off a device.
Swap12
Upgrade every 12 months by returning your phone — no need to pay off remaining balance.
Monthly Flex
Change your data allowance every single month at no penalty.
Sky Bundle Savings
Combined billing and exclusive discounts for existing Sky TV and broadband customers.
Share Data
Share Piggybank data across up to 7 SIMs on one account — great for families.
O2 Network
Same 99% 4G coverage as O2 direct, with 5G access via O2.
Strengths & Weaknesses
✓ Strengths
- Unique Piggybank 3-year data rollover
- Swap12 — upgrade phone every 12 months
- Monthly plan flexibility — change data monthly
- Great for Sky TV/broadband bundle customers
- Share saved data across 7 family SIMs
✕ Watch out for
- EU roaming NOT free (daily charge needed)
- Not as competitively priced as giffgaff or Three
- No equivalent of O2 Priority rewards
- RPI price changes with 30-day notice period
- Limited to Sky/O2 ecosystem for support