What do mobile network complaints actually tell you?
Mobile network complaints are the closest thing the UK has to a report card for how a provider treats you once it already has your money. Ofcom collects them every quarter from every major network, and the numbers are public. If you’re fed up with hold music and want evidence before you switch, this is where to look, not a forum thread from three years ago.
The latest figures come from Ofcom’s Telecoms and Pay TV Complaints report, published on 23 July 2026 and covering January to March 2026. Pay monthly mobile complaints fell to two per 100,000 customers across the industry, tying the lowest level Ofcom has ever published. That’s the good news. The less good news is that “average” still hides a wide gap between the best and worst networks.
Which network has the fewest mobile network complaints?
EE, giffgaff and Vodafone came out on top in the Q1 2026 figures, each logging just one complaint per 100,000 pay monthly customers. Three and Tesco Mobile matched the industry average of two, while O2 and iD Mobile sat a little higher at three per 100,000. Sky Mobile generated the most mobile network complaints of any provider that quarter, driven mainly by problems customers hit while trying to switch away.
None of these numbers are huge in isolation. A handful of complaints per 100,000 customers won’t ruin your week either way. What matters more is the pattern underneath them, checked August 2026, sourced from Ofcom: switching and mid contract price changes are consistently what tip people from mildly annoyed into formally complaining.
Mobile network complaints in Q1 2026, checked August 2026
| Network | Complaints per 100,000 customers | Where it ranked |
|---|---|---|
| EE | 1 | Joint lowest |
| giffgaff | 1 | Joint lowest |
| Vodafone | 1 | Joint lowest |
| Three | 2 | Industry average |
| Tesco Mobile | 2 | Industry average |
| O2 | 3 | Above average |
| iD Mobile | 3 | Above average |
| Sky Mobile | Highest of any provider | Worst performer |
Source: Ofcom Telecoms and Pay TV Complaints, published 23 July 2026, figures for January to March 2026.
Why do mobile network complaints keep spiking?
Two triggers show up again and again in Ofcom’s data, and neither is a surprise once you’ve dealt with either one. The first is switching. Sky Mobile’s complaints in Q1 2026 were driven largely by people trying to leave, not people trying to join, which tells you switching is where a provider’s process shows its cracks.
The second trigger is price. Ofcom noted that complaint levels had climbed in the previous quarter after several providers, O2 among them, pushed through mid contract price rises. Nobody enjoys reading that their fixed price wasn’t actually fixed, and a chunk of them ring up to say so. If a letter about a price change ever lands in your inbox, it’s worth reading properly rather than skimming past it.
Roo’s honest take: a network that rarely gets complained about isn’t necessarily flawless, it’s just better at not giving people a reason to ring up in the first place. That’s a genuinely useful thing to know before you commit to two years with someone.
Should mobile network complaints change which network you pick?
Yes, at least as one input among several, because low complaint numbers correlate with fewer of the specific problems that cost you time and money: billing errors, painful switches and unexpected price rises. A network that’s quietly getting the boring stuff right deserves some credit for it.
That said, mobile network complaints are only one part of the picture. Coverage in your postcode, the deal itself and what you actually need from a plan all matter too. Treat a good complaints record as a tie breaker between two otherwise similar deals, not as the only thing you check.
It’s also worth remembering these figures move around each quarter. A rough three months after a price change isn’t the same as a provider that’s consistently badly run. Check the trend over a year, not a single snapshot.
What should you actually do if you need to complain?
Complain to your provider first and get it in writing or through their app, so there’s a timestamp. Since 8 April 2026, Ofcom’s updated rules mean you only need to wait six weeks, not eight, before taking an unresolved mobile complaint to an independent ombudsman, which is a real deadline worth mentioning if a network is dragging its feet.
Our guide to the new mobile complaint rules covers exactly how that six week escalation works and what a deadlock letter means for you. If the real problem is a network fault rather than a billing dispute, our piece on network outage rights explains what you can claim.
If you’ve decided the relationship is over, keeping your number is straightforward these days. Our guide to switching network and keeping your number walks through the one touch switch process step by step.
Key takeaways on mobile network complaints
- Ofcom’s Q1 2026 data puts EE, giffgaff and Vodafone joint lowest for complaints, at one per 100,000 customers.
- Sky Mobile generated the most complaints of any mobile provider that quarter, mostly linked to switching problems.
- Switching and mid contract price rises are the two biggest triggers behind mobile network complaints generally.
- You can escalate an unresolved complaint to an independent ombudsman after six weeks, not eight, since 8 April 2026.
Frequently asked questions about mobile network complaints
- Which UK network had the fewest complaints in early 2026?
- EE, giffgaff and Vodafone were joint lowest, each on one complaint per 100,000 pay monthly customers in Ofcom’s Q1 2026 figures.
- Which network had the most mobile network complaints?
- Sky Mobile recorded the highest complaint rate of any mobile provider in that quarter, mostly tied to problems switching away.
- How often does Ofcom publish this complaints data?
- Every quarter. The most recent report was published on 23 July 2026 and covered January to March 2026.
- Do low complaint numbers mean a network is cheap?
- No. Complaint figures measure service and billing problems, not price, so it’s still worth comparing plans separately.
- How long do I have to wait before I can escalate a complaint?
- Six weeks, since Ofcom’s rule change on 8 April 2026, down from the previous eight week wait.
Mobile network complaints won’t tell you everything about a provider, but they’re one of the few things you can check that isn’t marketing spin. If your network keeps giving you reasons to ring customer service, that’s data too. Maybe it’s time to look elsewhere.
