The German mobile operator O2 confirmed that hackers used an exploit of the SS7 protocol to steal Two Factor Authentication (2FA) SMS codes sent by online banking websites to confirm fund transfers. They could successfully steal money from O2 customers bank accounts doing fund transfers at night.
I found some time ago a good PDF document from ZTE talking about APT 700 band for LTE and which was also showing a table of the theorical LTE coverage performance versus the radio frequency used. This is a very useful input to do quick coverage planning estimation based on the frequency band you can use.
I got a comment about the conversion of bps to kbps used in the LTE throughout calculator that reminded me about this bizarre situation that we usually do not convert telecom bits into kilobits the same way we convert storage bytes into kilobytes. Here is the reason why.
Hyperloop Transportation Technologies (HTT), one of the American start-up which develops a concept of super fast train moving on electromagnetic suspension at 1,200 km/h has recently signed an MoU with the region of Occitania in France to set-up its European R&D center. This made me wonder how it will be possible to communicate from an Hyperloop train with our smartphone.
I have released a first version of the field test / network monitoring application for Android 7 (Nougat) devices. With this app, you will be able to collect xARFCN data from the network and know which frequency band your smartphone is using.
I started to develop a FieldTest application for Android that I will publish on Google Play for everyone to use. I wanted to do this because of the frustration of not being able to find an app that is both eye-candy and reports useful information from my network.
Recently I discovered that Android N (7.0) provides a new method getArfcn() to get the Absolute Radio Frequency Channel Number, which gives you the exact frequency identifier that is used by the mobile phone on 2G (ARFCN), 3G (UARFCN) or 4G (EARFCN).