Sorry if the title is unclear. Let me explain the problem. The is a diagram of how my home is set up:

[My home (Diagram)](https://i.stack.imgur.com/7LYQu.png)

The light red bubble is the Modem's signal boundary. The light blue bubble is the Router's signal bountary

**Modem (HUAWEI HG659)**

* Connects to the wall/phone line and gets the internet
* Provides WiFi and also has a computer connected to it via ethernet
* Has another ethernet cable which connects the modem and my router together. Ethernet cable is a CAT 5, about 30-40m long

**There are walls between the router and modem, but I still get signal!**

**Router (TP-Link TL-WR841N / TL-WR841ND)**

* Has multiple ethernet devices connected to it (eg. Computer, PS4 etc)
* Also provides WiFi
* IEEE 802.11n standard

**Problem (Refer to diagram to understand where I am standing/walking):**

1. I am standing at Point A with my phone (connected to the router)
2. I start walking towards Point B then C (Still connected to router)
3. I start walking towards Point D (Still connected to router). However, clearly the signal is stronger if I connected to the modem, thus the internet would be faster. **This is my first Issue.**. I am still connected to the router, even though it would have been better to be connected to the modem.
4. I start walking towards Point E. I've now lost my WiFi signal to my router. My internet disconnects and is now taking 10-20 seconds to re-connected to the modem. I now don't have internet for 10-20 seconds. **This is my second Issue.** How can I make my modem and router automatically and seamlessly connect me to the modem or vise versa?

**Overall, the question being, how can the network seamlessly connect me to the strongest WiFi point without me even noticing or having to manually switch my WiFi connection point?** Right now, I have to either manually change it, or be so far away from one WiFi point that the phone disconnects from the internet and re-connects to another WiFi point.