Excellent customer service and quick…
Excellent customer service and quick resolutions!
Unlimited data, calls & texts. All over the world in over 100 countries with 5G speeds worldwide. No roaming or long distance fees. Starting at $19.99 per month.
Written by the business, not verified by us.Fonus (fonusmobile.com) has a 3.8 out of 5 rating on OK.one, based on 106 user reviews collected here. It is listed under Electronics & Technology and its reputation is mixed. Opinions are polarized: 71% rate it 4 stars or higher while 25% give 1 star; The business has not yet replied to negative reviews; Reviews mostly discuss Customer service, User experience. Last updated 2026-08-12.
Reviewers had a great experience with this company. Customers consistently praise the support staff for being exceptionally prompt, highly knowledgeable, and very helpful during the entire account setup process. Many people find the mobile network speeds and extensive overseas coverage to be remarkably reliable during international travel. However, some customers also noted occasional issues with unexpected network connectivity drops and technical problems while traveling abroad. Consumers occasionally experienced frustrating delays, long waiting times, or unhelpful behavior from support agents when seeking technical assistance. A few reviewers also mentioned difficulties or confusion when trying to set up phone number porting to another carrier.
Auto-generated from all reviews of this business. For reference only.Excellent customer service and quick resolutions!
Thank you for the great service. We are out if the country and received exceptional help in getting our global roaming started.
Bought a plan, and downloaded the app. OK to make calls, but no incoming calls. Anyone trying to call me received a voice message "this number is engaged" when it wasn't. Passed to customer service and no resolution even after 10 days. I asked customer services for a refund, this is their response: The Fonus Mobile Service is a prepaid service. All purchases of service plans, SIM cards, and related products are final and non-refundable. This includes, but is not limited to, cases of non-usage, partial usage, or dissatisfaction with the service. By purchasing and activating any Fonus product, plans or service, you acknowledge and agree to this no-refund policy. So no refund even though it never worked for incoming calls.
Straight and to the point. Had two issues. Card expired, was given link to update, and done. 2nd issue was the harder pill to swallow. I am on the starter plan. I thought since my card expired I'd be able to upgrade to plus plan as I updated my card info. That way the higher plan would only be charged. Apparently the system can't do that. So it's set up to upgrade next renewal date. A month away.
Really quick and efficient customer service!
This company is terrible. I spend a lot of time outside the country and T Mobile shut off my data and could not offer me any plan that allowed a lot of international roaming. Others very expensive, so I tried Fonus. They would not say exactly what would constitute "too much" international data usage, but I checked with their agent about my exact situation and they said it would be fine. A couple weeks into a trip to China, they shut off my data, which is a major hassle. I texted with them and they said I had violated their Fair Use Agreement. I asked how had I violated it? They could not say exactly how, just that I had violated it and they would not restore my data usage. I became angry at them for stranding me in China with no data, and they said they would not give me any customer service at all any more, then disabled the text support function in my app. In order to switch to another company by porting out my number I had to re-register with a new email to even be able to contact their customer service to get my port out PIN. Unbelievable. Additionally, they can't handle texts from 5 digit phone numbers, so a lot of 2FA stuff won't work. Voicemails did not work at all, and text groups with multiple people did not work. Dishonest claims about service, shockingly bad customer service, barely functional phone service. Stay away.
I’ve not had the chance to see how well the eSIM works for cell coverage but they get 5 stars for customer service and dedication to actually resolving an issue for me. My eSIM wouldn’t work and they guided me through multiple ways to fix it, released the eSIM was the issue, so sent a new one and started over. Fingers crossed the coverage on my travels is awesome too.
Terrible business to try and purchase from Anna particularly is rude and unhelpful “customers like you” if you’re reading this Anna, isn’t the way you should address people during a discussion. Appalling service
Helped me transfer my eSIM to a new phone quickly and efficiently.
It works well for roaming well in most places around the world
Solved my problem, although there's a bit of a wait. Luna was very helpful.
Bruce from Fonus was very thorough with his explanations and was able to lead me to figure out the issue with my esim
Great customer service!! Quick replies.
Fonus Review I had an issue with outgoing calls after reactivating my Fonus subscription. My account was active, the payment was completed, and the app was working, but every outgoing call ended with the message: "Please contact Fonus Customer Support." The issue lasted about 14 days. I contacted Fonus support several times, restarted the app, logged out and logged back in, and reinstalled the application, but the problem remained. The important step was identifying that the problem was not with my phone or the application, but with the SIP/VoIP service configuration on the Fonus server side. After this was escalated to the technical team, the issue was fixed and outgoing calls are working again. Thank you to Bruce and the Fonus support team for following up and resolving the problem. I recommend Fonus, but I hope similar server-side activation issues can be detected and fixed faster in the future.
Úrsula was of great help as we could not install the eSIM as she guided us until done! Thank you so much! This is our second time with Fonus and will recommend it to friends and family travelling abroad!
Great customer service and fast response. I had a software issue and I messaged customer service on the app and they got back to me quickly and resolved my issue. I wasn't expecting such great customer care with such a cheap phone service, glad I did the switch with Fonus, it was worth it.
I used this service while in Saudi Arabia it worked flawlessly and saved me a lot of money from roaming charges from my phone company. Using again on my upcoming trip. Thanks
Bruce did an amazing job and saved me a lot of headache and stayed patient in between the delayed replays. Thank you Bruce
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