Customers often mention fast ordering, quick delivery, and helpful live support. Many highlight big savings and good plan pricing. A smaller group reports intermittent SIM or network failures and weak 5G performance. A few say porting details and plan limits were not explained clearly.
Examples from available reviews (Sep 2025 – Mar 2026).
Pay-as-you-go eSIM purchased and number ported in under 24 hours.
“Pay as you go esim bought yesterday and my old number was ported in less than 24 hours.”
Seamless switch and saved about 50% for a family of four.
“Excellent pricing, saving 50% for a family of 4 with 4 SIM cards”
Sim intermittently stops working despite contacting support.
“still the sim stops working every now and then.”
Unlimited plan was restricted without clear limits and poor customer support.
“Their “unlimited” is not unlimited, their systems don’t work, their support is clueless”
Many reviews commend quick, hands-on help from named staff who handle eSIM swaps, SIM cancellations, and refunds. Support also fixed porting and preorder problems fast and explained the next steps clearly. A few reviewers mention slower email replies, but this comes up less often than praise for phone support.
Many customers point to major savings on family plans and two-year upfront deals. Reviewers often mention more data for less money than with their previous providers. Negative comments about value are rare.
Customers describe ordering as easy and the number-change process as straightforward. Many call the website simple to use with plenty of options, though some note missing features such as a dedicated app and a broken online tracker. These issues appear in a minority of reviews.
Numerous reviewers report dependable coverage and describe day-to-day use as faultless. A separate cluster of complaints points to intermittent SIM failures and poor 5G that disrupted connectivity. These negative experiences align with the lowest ratings.
Several reviewers praise clear, direct contact with knowledgeable staff and quick answers by phone. A smaller number flag confusing updates about porting progress and about limits on plans they viewed as "unlimited". These communication issues show up less often than positive contact experiences.
Most reviews show high satisfaction tied to fast delivery, helpful staff, and cost savings. A minority report serious SIM reliability problems or unexpected plan restrictions, leading to one-star ratings. Overall, reviews split between many positive outcomes and a few major negative experiences.
For each review, the core experience based on original source reviews.
Sources: Trustpilot (40) · Quotes shortened · As of: March 2026
Easy ordering and fast dispatch; number transfer worked without problems.
“The ordering process was very easy and the phone was despatched very quickly.”
Signal is unsteady and 5G performance is below expectations.
“Signals are not steady it’s goes up Ann’s down all the time . 5G is not as it should be”
Switch from EE was seamless and indistinguishable from previous provider.
“Switch over from EE was seamless, so much so that I’m not even aware that I’m not with EE anymore.”
Slow email responses, but Douglas resolved eSIM swap quickly by phone.
“Douglas sorted me out by swapping an eSim to a new phone within a minute”
Reports great signal but experienced a SIM delivery delay.
“Great signal, delay in sim delivery”
Reviewer finds both value for money and service to be great.
“Great value for money and service.”
Quick transfer and good two-year upfront price with same EE service.
“Quick and easy transfer”
Customer service promptly cancelled duplicate eSIM purchases and issued refunds.
“it was sorted very quickly cancelled and refunded my money.”
Cancelling an extra SIM was easy and refund was issued next day.
“Number ported in 3 days, again no issues.”
Website is easy to use with many options and great prices.
“Easy to use website featuring many different options at great prices.”
Tegan provided very helpful, efficient and friendly customer service.
“Tegan at Customer Service was extremely helpful and efficient, friendly too.”
Ordering and delivery were easy and quick; communication and support excellent.
“Phone was easy to order and delivery was very quick.”
Two-year SIM worked well with EE coverage, but website and usage tracking lack an app.
“Paid upfront for 2 years for a 100gb sim.”
Easy access to knowledgeable staff who explain and ensure system functionality.
“Easy access to a real person who knows his stuff about the system”
Douglas provided polite, patient and very helpful customer service throughout.
“Douglas was very helpful, he guided me through everything and was polite, patient and courteous throughout.”
An immediate answer was given and reviewer called it awesome.
“Gave answer immediately”
Pay-as-you-go eSIM purchased and number ported in under 24 hours.
“Pay as you go esim bought yesterday and my old number was ported in less than 24 hours.”
Service offers great coverage and excellent value for money.
“Great coverage and excellent value for money.”
Delivery was fast and customer service excellent.
“Fast delivery excellent customer service”
Easy purchase and setup, but online tracker failed for one phone.
“on line tracker for one phone doesn’t work”
Porting issues could have been communicated better, but overall positive.
“Issues with porting my number could have been communicated a bit better.”
Used for three months and device seems to be working okay.
“I've had it for 3 months seems to be working okay”
Reviewer is very happy with the service and new phone.
“Really happy with the service, love my new phone”
Seamless switch and saved about 50% for a family of four.
“Excellent pricing, saving 50% for a family of 4 with 4 SIM cards”
Found phone and airtime plans great value; everything going well.
“Great value phone and airtime plans.”
Describes the system as faultless and priced well.
“Faultless system at a great price”
Sim intermittently stops working despite contacting support.
“still the sim stops working every now and then.”
Company is nice and easy to deal with.
“Nice company easy to deal with.”
Reviewer reports great network coverage.
“Great coverage”
eSIM transfer delay resolved by prompt, friendly customer service and physical SIM.
“Very prompt service, the new sim turned up in the post 2 day's later”
Changing number was very easy; phone worked immediately after SIM insertion.
“Very easy to change number,after inserting new sim phone was ready.”
Delivery was very fast and prompt.
“Very fast delivery”
Company provides a good product at a good price.
“Provide a good product at a good price”
Reviewer is very pleased and expresses thanks.
“Excellent very pleased thanks”
Quick order response and seamless SIM transfer, excellent data value.
“Three times the data for nearly half the cost!”
Customer service was pleasant and efficient; network performing well.
“Very pleasant and efficient service from the customer team.”
Unlimited plan was restricted without clear limits and poor customer support.
“Their “unlimited” is not unlimited, their systems don’t work, their support is clueless”
Switching was impressive: swift porting, excellent eSIM security and good support.
“I have just switched to Mozillion and so far, they have been impressive.”
Customer service (Amanda) resolved preorder issues promptly and efficiently.
“Amanda in customer service was absolutely fantastic”
Second-time user: phone arrived on time and well-priced.
“This is the second time I have used this company, the phone arrives on time and is a good price.”
This page combines submitted experiences with public reviews from platforms such as Google, Trustpilot, etc. Recurring points are summarised without changing the content of reviews.
Mozillion is a UK mobile provider for consumer customers. It sells mobile plans, SIMs, and handsets for personal and family use. Customers order online and can reach support by phone or email. The site also lists technical information and contact details for plan specs, coverage, and account management.