Verizon Phone And Truphone SIM For iSocket

iSocket Smart Plug SMS Manager Android
Posted (Last update )

NOTE! This is old article

Since 2021 we offer new Plug-and-Go hassle-free iSocket with integrated connectivity - it works out of the box and can solve all the problems that we have been helping clients solve for the last 10+ years: remote power outage alarm monitoring, vaccine storages temperatures monitoring, remote reboot for equipment, break-in, flood, fire, gas leak and other notifications, and more. Just one new amazing iSocket! With new energy metering capabilities. You can order it from

This article is a good example of how much trouble our customers and our support have had with SIM cards. This is the main reason why we are introducing the hassle-free Plug-and-Go iSocket technology in 2021.

One of our customers reported that she had a problem sending a message to her iSocket fitted with a Truphone SIM from her Verizon phone. We tried to investigate the problem with Truphone, but they were unable to help. It turned out that we know more about the cause of the problem than their support does, but they’re just too big a company to care and accept our explanation.

The root of the problem is that Verizon sometimes (it was actually only twice out of some hundred) considers Truphone’s SIM numbers to be landline numbers. As soon as Verizon sees a landline number it wants to charge you extra for a message to a “landline” number. You will see the following reply from Verizon: "317XXX is a landline #. Reply Y to send all TXT messages to this # as voice messages for 0.25/msg. + std msg fee. Details @ TexttoLandline"

This problem is neither Verizon’s nor iSocket’s, but Truphone’s. They connect a phone number to their SIM card and for some reason this number is treated as a landline.

If you experience this bug, just ask Truphone to change your SIM and/or its phone number to another one (it would be better to change the number). This should help.

Note that this only happened twice. It may never happen to you. A lot of our customers with Verizon phones use Truphone SIMs in their iSocket without any problems.

Posted (Last update )


5.0 (based on 10 reviews)

iSocket for power outages monitoring in the United States and Canada

 I just received my unit. I plugged it in and it JUST WORKS! Did a test and was notified just as expected. Great product!!!

 I just received my unit. I plugged it in and it JUST WORKS! Did a test and was notified just as expected. Great product!!!

5.0 By from USA

A small cost for the peace of mind and comfort that iSocket gives you.

Remember, the cost of the damage from a power outage can be considerably more than the cost of a solution that will send you power outage notifications. And remember, power failure alerting is not the only feature iSocket offers you.