30 day SIM only deals
No long contract, cancel anytime. Compare 30 day rolling SIM only deals.
Prices correct as of September 2026. We may earn commission when you click through — this never affects our rankings.
Filters
Showing 20 of 65 deals
Sort by
LB
Lebara
4.84.8 (78000)
Uses Vodafone network
EU roamingInternational calls5G
Data
5GB
Calls
Unlimited
Texts
Unlimited
Contract
SIM only
Rolling
£5.00/mo
5GB · SIM only
Unlimited calls & texts
EU roamingInternational calls5G
Continue on Lebara
✓ International minutes included✓ EU roaming included✓ No credit check
iD Mobile
4.34.3 (70000)
Uses Three network
No price riseData rollover5G
Data
25GB
Calls
Unlimited
Texts
Unlimited
Contract
SIM only
Rolling
£6.00/mo
25GB · SIM only
Unlimited calls & texts
No price riseData rollover5G
Continue on iD Mobile
✓ Roll over unused data✓ No roaming charges in EU✓ No price rises mid-contract
SM
Smarty
4.04.0 (48000)
Uses Three network
No price riseData refund
Data
18GB
Calls
Unlimited
Texts
Unlimited
Contract
SIM only
Rolling
£6.00/mo
18GB · SIM only
Unlimited calls & texts
No price riseData refund
Continue on Smarty
✓ No annual price rises✓ Unused data refunded✓ EU roaming included✓ No Credit Checks, Data Roaming
iD Mobile
4.34.3 (70000)
Uses Three network
No price riseData rollover5G
Data
10GB
Calls
Unlimited
Texts
Unlimited
Contract
SIM only
Rolling
£6.00/mo
10GB · SIM only
Unlimited calls & texts
No price riseData rollover5G
Continue on iD Mobile
✓ Roll over unused data✓ No roaming charges in EU✓ No price rises mid-contract
SM
Smarty
4.04.0 (48000)
Uses Three network
No price riseData refund
Data
5GB
Calls
Unlimited
Texts
Unlimited
Contract
SIM only
Rolling
£6.00/mo
5GB · SIM only
Unlimited calls & texts
No price riseData refund
Continue on Smarty
✓ No annual price rises✓ Unused data refunded✓ EU roaming included✓ No Credit Checks, Data Roaming
iD Mobile
4.34.3 (70000)
Uses Three network
No price riseData rollover5G
Data
50GB
Calls
Unlimited
Texts
Unlimited
Contract
SIM only
Rolling
£7.00/mo
50GB · SIM only
Unlimited calls & texts
No price riseData rollover5G
Continue on iD Mobile
✓ Roll over unused data✓ No roaming charges in EU✓ No price rises mid-contract
SM
Smarty
4.04.0 (48000)
Uses Three network
No price riseData refund
Data
40GB
Calls
Unlimited
Texts
Unlimited
Contract
SIM only
Rolling
£7.00/mo
40GB · SIM only
Unlimited calls & texts
No price riseData refund
Continue on Smarty
✓ No annual price rises✓ Unused data refunded✓ EU roaming included✓ No Credit Checks, Data Roaming
LB
Lebara
4.84.8 (78000)
Uses Vodafone network
EU roamingInternational calls5G
Data
15GB
Calls
Unlimited
Texts
Unlimited
Contract
SIM only
Rolling
£7.00/mo
15GB · SIM only
Unlimited calls & texts
EU roamingInternational calls5G
Continue on Lebara
✓ International minutes included✓ EU roaming included✓ No credit check
iD Mobile
4.34.3 (70000)
Uses Three network
No price riseData rollover5G
Data
80GB
Calls
Unlimited
Texts
Unlimited
Contract
SIM only
Rolling
£8.00/mo
80GB · SIM only
Unlimited calls & texts
No price riseData rollover5G
Continue on iD Mobile
✓ Roll over unused data✓ No roaming charges in EU✓ No price rises mid-contract
SM
Smarty
4.04.0 (48000)
Uses Three network
No price riseData refund
Data
75GB
Calls
Unlimited
Texts
Unlimited
Contract
SIM only
Rolling
£8.00/mo
75GB · SIM only
Unlimited calls & texts
No price riseData refund
Continue on Smarty
✓ No annual price rises✓ Unused data refunded✓ EU roaming included✓ No Credit Checks, Data Roaming
LB
Lebara
4.84.8 (78000)
Uses Vodafone network
EU roamingInternational calls5G
Data
30GB
Calls
Unlimited
Texts
Unlimited
Contract
SIM only
Rolling
£8.00/mo
30GB · SIM only
Unlimited calls & texts
EU roamingInternational calls5G
Continue on Lebara
✓ International minutes included✓ EU roaming included✓ No credit check
AM
Asda Mobile
3.73.7 (17000)
Uses Vodafone network
No contractNo price rise5G
Data
10GB
Calls
Unlimited
Texts
Unlimited
Contract
SIM only
Rolling
£8.00/mo
10GB · SIM only
Unlimited calls & texts
No contractNo price rise5G
Continue on Asda Mobile
✓ No contract✓ Free SIM✓ Rewards with Asda shopping
giffgaff
3.93.9 (30000)
Uses O2 network
No price riseEU roaming
Data
5GB
Calls
Unlimited
Texts
Unlimited
Contract
SIM only
Rolling
£8.00/mo
5GB · SIM only
Unlimited calls & texts
No price riseEU roaming
Continue on giffgaff
✓ No contract✓ EU roaming included✓ Free SIM delivery
iD Mobile
4.34.3 (70000)
Uses Three network
No price riseData rollover5G
Data
108GB
Calls
Unlimited
Texts
Unlimited
Contract
SIM only
Rolling
£9.00/mo
108GB · SIM only
Unlimited calls & texts
No price riseData rollover5G
Continue on iD Mobile
✓ Roll over unused data✓ No roaming charges in EU✓ No price rises mid-contract
SM
Smarty
4.04.0 (48000)
Uses Three network
No price riseData refund
Data
95GB
Calls
Unlimited
Texts
Unlimited
Contract
SIM only
Rolling
£9.00/mo
95GB · SIM only
Unlimited calls & texts
No price riseData refund
Continue on Smarty
✓ No annual price rises✓ Unused data refunded✓ EU roaming included✓ No Credit Checks, Data Roaming
LB
Lebara
4.84.8 (78000)
Uses Vodafone network
EU roamingInternational calls5G
Data
50GB
Calls
Unlimited
Texts
Unlimited
Contract
SIM only
Rolling
£9.00/mo
50GB · SIM only
Unlimited calls & texts
EU roamingInternational calls5G
Continue on Lebara
✓ International minutes included✓ EU roaming included✓ No credit check
iD Mobile
4.34.3 (70000)
Uses Three network
No price riseData rollover5G
Data
110GB
Calls
Unlimited
Texts
Unlimited
Contract
SIM only
Rolling
£10.00/mo
110GB · SIM only
Unlimited calls & texts
No price riseData rollover5G
Continue on iD Mobile
✓ Roll over unused data✓ No roaming charges in EU✓ No price rises mid-contract
SM
Smarty
4.04.0 (48000)
Uses Three network
No price riseData refund
Data
100GB
Calls
Unlimited
Texts
Unlimited
Contract
SIM only
Rolling
£10.00/mo
100GB · SIM only
Unlimited calls & texts
No price riseData refund
Continue on Smarty
✓ No annual price rises✓ Unused data refunded✓ EU roaming included✓ No Credit Checks, Data Roaming
VOXI
3.23.2 (23000)
Uses Vodafone network
No price rise5G ready
Data
80GB
Calls
Unlimited
Texts
Unlimited
Contract
SIM only
Rolling
£10.00/mo
80GB · SIM only
Unlimited calls & texts
No price rise5G ready
Continue on VOXI
✓ Endless social media✓ Endless video streaming✓ 5G at no extra cost
VOXI
3.23.2 (23000)
Uses Vodafone network
No price rise5G ready
Data
60GB
Calls
Unlimited
Texts
Unlimited
Contract
SIM only
Rolling
£10.00/mo
60GB · SIM only
Unlimited calls & texts
No price rise5G ready
Continue on VOXI
✓ Endless social media✓ Endless video streaming✓ 5G at no extra cost