The 3G4G Blog

Back in January 2011, I wrote about Enhanced Multimedia Priority Service , or eMPS, in 3GPP Release 10. At the time, the focus was on extend...

As 5G evolves and the number of deployed IoT devices increases globally, efficient and reliable network selection becomes ever more critical...

One way all operators in a country/region/geographic area differentiate amongst themselves is by the reach of their network. It's not in...

You have probably heard me a complaining about the pace of VoLTE rollout, 2G/3G shutdowns, 4G Voice roaming, etc. This post highlights all t...

SEPP (Security Edge Protection Proxy) is part of the roaming security architecture as shown in the figure above. Ericsson's article ,...

During the mobile world congress, I was pleasantly surprised to see how LoRa ecosystem keeps getting larger. There was also an upbeat m...

5G is becoming a case of 'damned if you do damned if you don't'. Behind the headlines of new achievements and faster speeds lie...

I have been covering the LTE Voice Summit for last couple of years (see here: 2015 & 2014 ) but this year I wont be around unfortunate...

Back in 2011, I was right in predicting that we will not see VoLTE as early as everyone had predicted. Looking through my twitter archive, ...

Last year's summary of the LTE voice summit was very much appreciated so I have created one this year too. The status of VoLTE can...

There was an interesting discussion on different roaming scenarios in the LTE Voice Summit on 29th, 30th Sep. in London. The above pictu...

VoLTE is a very popular topic on this blog. A basic VoLTE document from Anritsu has over 40K views and my summary from last years LTE Voi...

By now I am aware that most people have heard of the flaws in SS7 networks that allow hackers to snoop, re-route calls and read text mess...