Tello.com (tello.com) has a 4.5 out of 5 rating on OK.one, based on 202 user reviews collected here. It is listed under Electronics & Technology and its reputation is excellent. 86% of reviews are 4 stars or higher and 8% are 1 star; The business has replied to 91% of negative reviews. Last updated 2026-08-11.
only available if you are IN THE US and this is not mentioned anywhere!
Reply from Tello.com2026-07-20
Dear Lina,
We apologize for any confusion or frustration regarding our activation process.
To clarify, Tello is a US-based carrier, and our network guidelines require all SIM cards to be initially activated and register usage within the United States.
This initial domestic activation is necessary to properly sync the device to our network before features like Wi-Fi Calling or International Roaming can be used abroad.
We want to be completely transparent about our service rules, which are detailed in our International Service Agreement within our Terms & Conditions at:
tello.com/terms.
Because you were unable to use the service, please rest assured that your latest order has been fully refunded. The funds should reflect back in your account within the next 48 to 72 hours, depending on your bank's processing times.
We appreciate your feedback and wish you the best with your future connectivity needs.
All I wanted was an esim to transfer my phone number too. It was confusing trying to do this you charged me $3 for a new sim when all I wanted was an esim.
They corrected everything, so 5 stars now.
Reply from Tello.com2026-07-20
Dear Sherman,
We apologize for any confusion!
Our records show that your Tello eSIM was successfully generated under order #105139167. However, we noticed that a physical SIM card was also ordered just a few minutes later under order #105139719, which is why you saw that extra $3 charge.
To take care of this for you immediately, we have canceled the pending activation for the physical card and issued a full refund for that order. If the physical SIM package still arrives in your mail, you can simply discard or reject it, as your active service will remain entirely on your eSIM.
We are always looking for ways to make our setup process as clear and seamless as possible.
One of our customer service experts will reach out to you directly to ensure your eSIM transfer is running perfectly and to gather any feedback you have on how we can make our ordering steps less confusing.
Sincerely,
Tello
D
Dette Henson · 1 review · Experienced 2026-07-19 ·
★★★★★
Excellent Service of Julia
Julia was incredibly patient, kind, and genuinely helpful throughout my porting process. She made the entire experience smooth and stress-free. Excellent service. Thank you Julia!
I first discovered Tello when I was searching for a provider to replace my old one. That phone was soon to be obsolete and I needed to either replace it with that company or find a new one. I checked with them and the rates were going to be far higher than before so I looked online and found Tello. I've been with them over 4 and a half years now and have had no problems at all!
Reply from Tello.com2026-07-20
Hi Ron,
We're so happy to hear that you found us when you needed a new provider and that we've been able to serve you well for over four and a half years! We truly appreciate your loyalty and positive feedback.
Tello
c
customer · 2 reviews · Experienced 2026-07-18 ·
★★★★★
Excellent service on every dept
The agent was very patient with me in helping to set up things the way I wanted. The fact people speak clear English is so refreshing.
M
May J · 1 review · Experienced 2026-07-18 ·
★★★★★
good customer service
Initially having some issues, I was ready to cancel but lucky for me Jorge Rivert at tello answered my call. He patiently helped me get my service back to working. He took the time to listen, giving me options, without any pressure, just truly there to help. A company that has a person on the other end and is still affordable isnt easy to find anymore. It was a bit tricky to navigate how to contact customer service but Im so grateful I got Jorge. He was helpful, professional, informative, and kind. Tello offers very competitive pricing with nice customer service on top. I plan to stay:)
P
Pete · 1 review · Verified · Experienced 2026-07-18 ·
★★★★★
Tello cell
Tello has been a reliable company for my cell usage. I use very little mobile data and tello provides unlimited texting. Perfect for my situation and at a very reasonable price.
w
william · 2 reviews · Verified · Experienced 2026-07-16 ·
★★★★★
Best value in cell systems
Best value in cell systems, yet they keep up with new tech developments.
Great! Support is responsive as well as their services
B
Brad Brak · 2 reviews · Experienced 2026-07-18 ·
★★★★★
Great knowledge
Great knowledge, English proficiency and excellent customer service.
D
Dave · 2 reviews · Verified · Experienced 2026-07-16 ·
★★★★★
Good value for the price
Good value for the price. Tello should give you a grace period/amount of data, texts, and minutes if you go over on a non-frequent basis close to the end of the billing cycle.
S
Samuel Williams · 1 review · Experienced 2026-07-18 ·
★★★★★
Diana the rep was very patient
Diana the rep was very patient, she walked me through the process,i am very happy with the way she helped me.Thank you.
The cheap price isn't worth not having access to data in remote places and it blocking text messages.
I bought the plan and it worked fine until we were traveling cross country and both my parents had signal with their name brand plans whereas I had none. I could see that my phone had access to phone towers but I never received signal. This plan also had issues that made it so my dad's texts wouldn't show up and two weeks later it blocked me from texting my boyfriend and him from texting me back, no matter how much troubleshooting I went through. Choose a name-brand plan that actually works so your money isn't wasted.
Reply from Tello.com2026-07-20
Hello Ashlie,
Thank you for sharing your experience. We sincerely apologize for the frustration and inconvenience this situation caused.
We understand how important it is to have reliable service and stay connected with family and friends, especially while traveling.
After reviewing your account, we can see that you contacted our support team regarding an SMS issue. We made some adjustments to your line and the service was restored. Based on our records, text messaging is now functioning correctly on your account.
Regarding your concerns about signal or connectivity, one of our support specialists will contact you directly to review the issue in more detail and work with you to find the best possible resolution.
Thank you for your patience, and we appreciate the opportunity to assist you.
D
DW · 1 review · Experienced 2026-07-17 ·
★★★★★
Maurice deserves a raise!!
Maurice was so patient and kind and helpful. His voice is very calm and put me at ease, as I was worried and confused about why I was having trouble porting my old number over. He provided clear instructions and excellent customer service! Give that man a raise!!🤗
