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📱 Stay limitless, stay flexible—your SIM, your rules.
SMARTY Unlimited SIM Only 1-month plan offers flexible, commitment-free mobile connectivity with unlimited UK data, calls, and texts on blazing 5G LTE. It includes 12GB of EU roaming data, unrestricted tethering, and lets you keep your existing number. Perfect for professionals who demand control, value, and seamless connectivity without long-term contracts.










| ASIN | B0D6W46FJK |
| Best Sellers Rank | 844 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 10 in Prepaid SIM Cards |
| Brand | SMARTY |
| Brand Name | SMARTY |
| Cellular Technology | LTE, 5G |
| Cellular technology | LTE, 5G |
| Customer Reviews | 4.3 out of 5 stars 374 Reviews |
| Item Dimensions L x W | 12.5L x 8.5W centimetres |
| Item Weight | 1 Grams |
| Manufacturer | SMARTY |
| Number of Items | 1 |
| Number of items | 1 |
| Product dimensions | 12.5L x 8.5W centimetres |
| Service Provider | SMARTY |
| Service provider | SMARTY |
D**W
Value for money plan that you can build on.
Easy way to pick up a new phone SIM in a hurry. Arrived the next day and phone was set up in minutes. Easy to use plan and good value for money
A**R
Absolutely brilliant internet coverage
I was having problems with two other Networks of which there was no coverage whatsoever, just on chance I bought this with a router. I had instant and full Internet access. I have ordered another for my phone as £40 cheaper. I am really happy with the buy. Cheers
A**R
Mobile router
Unlimited data and perceived as being good value for money. It was incompatible with the mobile router that was advertised with
S**T
Works
Not sure what to say. It works.
A**S
Wish hadn't bothered!
Wanted this for 4G WiFi while away in isle of wight, Received SIM and registered it tested at home and got amazing speeds, however on isle of wight it was a different matter, hardly any signal, not just in our resort but anywhere, and kept dropping off, was lucky to get 2mbps most times, not sure if it's due to three network being poor there or if it's common on all networks as we had little or no signal using EE, O2 & Vodafone! Will pay for resort WiFi if we ever go there again!
L**E
Beware: Not Truly Unlimited
I’ve had to rely on this for two months so far much to my misfortune and no thanks to Virgin Media. For starters, the signal strength is pretty crap; do NOT rely on those sites that supposedly tell you how good a brand’s signal is in your area - I have found every single one to be unreliable. Not only that, but Smarty is technically Three, a company that has much fewer masts than others and therefore much less coverage. Now onto the worst part. The “unlimited” is a load of crap. Both months I’ve used it, it’s started off decent enough, but both times near about several days off from the sub ending the quality drops off drastically. To me that means that there are caps in place whether by speed or GBs, I don’t know. Something definitely runs out before the sub runs out which is simply not good enough for something that claims to be unlimited. As a whole and as a rule at this point, I won’t ever be going for any products that use Three; I had gotten a 200gb data sim for my phone at one point but the signal was so bloody bad I had to cancel it outright as I wasn’t even getting voicemails until days after they were sent. Three are very evidently as scammy and scummy as Virgin Media.
S**R
Ok
Ok
R**T
Works great
Easy set up, works out the box, good price no contracts - thumbs up from me
Trustpilot
2 weeks ago
1 week ago