16 Feb 2023

My mobile phone reception is not great close to my roof (where my home office is), and in the cellar (where the home cinema, playroom & DIY rooms are).

Kunden von sim.de surfen und telefonieren daher, je nach Verfügbarkeit vor Ort, entweder via 1&1 oder im O2 E-Netz.

I knew about WiFi solutions that carry the comms over WiFi instead, but I am not a fan of using WiFi for voice calls.

I also knew about solutions sold by the carriers for their own network.

But I discovered that there are also generic solutions that work with any carrier.

Products

ANNTLENT

Official website:

09 Mar 2023 Did some tests since last week. While it somehow shows a bar or 2 more, sometimes even full reception, it's not consistent/reliable. Seems that signal boosting comes on and off. I don't have the knowledge or tools to test further though.
Bottom line though, when tested on a few phone calls, it did not help, on the contrary - calls were choppy, with sometimes up to 2 seconds of silence.

The search for a solution continues...

2 options left:

• test another model (see below)
• test another mobile provider with better network (Telekom)

GSM Repeater RF E10S

Knowledge

Need to figure out what band is used by my 2 carriers (DE & UK) to ensure I buy the right product.

Dial *3001#12345#* on iPhone.
This will not make a call, but will display the hidden Field Test Mode menu.

• Vodafone UK: Band Info = 20
• Sim.de/O2 DE: Band Info = 20 (LTE)

Resources