Skip to main content

Case Study: The Disappearing Data of T-Mobile

NOTE: The problem has repeated itself. So this doubles as an off the cuff case study in level 1 troubleshooting, looking at data, comparing information at different locations. 

Also - I wrote it, and I'm not wasting my time by not publishing it.

 I have the Samsung Galaxy A12, and the service through T-Mobile is pretty good.

While the infrastructure around our nation is fair at best, it's showing it's age and weakness in storms - and that may apply to private towers owned by T-Mobile as well.

 I turn on data, and either:

  • It works
  • The symbol in the upper right does not show up and it's not working.
  • The symbol shows up and the data still doesn't work.

 

'you're offline' youtube message

 

Here's a demo; Other videos are available upon request.




Now, there is a setting where I can change the mobile band (2G/3G, 3G/4G) my phone uses, something I was unaware of until a cool Twitter user let me know. This alleviates the problem sometimes, but if I go hours without using data, the problem returns. 


Could your area not have 5G availability during peak hours?

It's possible. However, it also struggles when I've switched to more common bands. It's also all but assured that my area has outdated infrastructure, to match the outdated .... everything else.

It stops working in a popular tourist spot. What if someone who is visiting gets into trouble and needs to contact someone? They better know how to use Wi-Fi calling, or go with another provider.

Does This Happen With Other Phones?

There are 3 phones in my household - One drops calls at a specific spot in the city. The other sometimes has a problem where it's not receiving calls. Mine is the newest phone (Though not a flagship), and seems to have the lack of service problem all over the city.

I had a Google Pixel for a few days before this problem happened in the middle of the city, rendering me unable to call anyone.

I shouldn't have to change my mobile band or phone every time I turn on my data to get it to work temporarily.


So, What's That?

When the issue repeated itself recently, after restarting my phone, I got this notification:


Carrier Hub processing requests

I actually couldn't see what the rest of the word was. Prolapsing? Protecting? Probably processing. There may possibly be a backlog of requests from multiple users, but shouldn't one of the biggest telecom companies in the US be prepared for this?

My Approach to Ensuring More Consistent Service in High-Population Areas:

There is a theory that the lampposts hold broadcast and cell service network antennas. I can name only one in the area. Add a few more, or install some omni-directional antennas on rooftops.

Who Will Be Paying For This? AKA: Stakeholder Buy-In

Consider the businesses that have online coupons - Bath and Body Works, Zoe's Kitchen, Aeropostale, Hot Topic, Old Navy, etc. If the customer can't use data to get a coupon, they may walk out without buying anything. Installing these antennas is an investment into future sales, so the data is easily useable for special deals. Consider collaborate with the telecom company to split the cost.

Comments

Popular posts from this blog

Connecting IoT Devices to a Registration Server (Packet Tracer, Cisco)

 If you're seeing this post, I'm helping you, and you probably have LI presence: React and share this post to help me in return.   In Packet Tracer, a demo software made by Cisco Systems. It certainly has changed a lot since 2016. It's almost an Olympic feat to even get started with it now, but it does look snazzy. This is for the new CCNA, that integrates, among other things, IoT and Automation, which I've worked on here before. Instructions here . I don't know if this is an aspect of "Let's make sure people are paying attention and not simply following blindly", or an oversight - The instructions indicate a Meraki Server, when a regular one is the working option here. I have to enable the IoT service on this server. Also, we assign the server an IPv4 address from a DHCP pool instead of giving it a static one. For something that handles our IoT business, perhaps that's safer; Getting a new IPv4 address every week or so is a minimal step against an

Create a Simple Network (Packet Tracer) + A Walkthrough

Again; I've done this, but now there's so many new things, I'm doing it again. The truly new portions were...everything on the right side of this diagram; The cloud needed a coax connector and a copper Ethernet connector. It's all easy to install, turn off the cloud (Weird), install the modules. Getting the Cable section of Connections was an unusual struggle - The other drop down menu had nothing within. It required going into the Ethernet options and setting the Provider Network to 'cable', which is the next step AFTER the drop-downs. The rest was typical DHCP and DNS setups, mainly on the Cisco server down there. The post is rather short - How about adding a video to it? Find out what A Record means - This site says 'Maps a name to an IP address', which is DNS. So it's another name for DNS? You can change them (presumably in a local context) to associate an IP address to another name.

Securing Terraform and You Part 1 -- rego, Tfsec, and Terrascan

9/20: The open source version of Terraform is now  OpenTofu     Sometimes, I write articles even when things don't work. It's about showing a learning process.  Using IaC means consistency, and one thing you don't want to do is have 5 open S3 buckets on AWS that anyone on the internet can reach.  That's where tools such as Terrascan and Tfsec come in, where we can make our own policies and rules to be checked against our code before we init.  As this was contract work, I can't show you the exact code used, but I can tell you that this blog post by Cesar Rodriguez of Cloud Security Musings was quite helpful, as well as this one by Chris Ayers . The issue is using Rego; I found a cool VS Code Extension; Terrascan Rego Editor , as well as several courses on Styra Academy; Policy Authoring and Policy Essentials . The big issue was figuring out how to tell Terrascan to follow a certain policy; I made it, put it in a directory, and ran the program while in that directory