[SOLVED] Internet immediately crashes when my sister connects her phone to WiFi ?

[terrabursak14]

I don't know if this category is wrong; if wrong, sorry.

I have good Vodafone ADSL internet and it handles 6-7 device at the time. Gives maximum speed and low ping. But when my sister connects to WiFi with her phone, it destroys internet. CS: GO with 1000-1500 ms ping (normally 55-60). Download speed goes down to 200-300 KB/s (normally 3.2-3.4 MB/s) Can't even load Google or Microsoft etc. Not in only this internet, in everywhere. When she connects to any WiFi with her's current phone, download speed drops considerably ?

What is the problem with her phone or internet?

 

[Ralston18]

My thought is that there is an IP address conflict.

Or some other related mis-configuration.

Make and model router?

The router's logs (if available and enabled) may provide some clue.

Who has full admin rights to the router? You will need help from that person.

 

[gggplaya]

You only have about 24mbps internet plan. If her phone is launching updates, or if she's streaming alot of video. That could drop your connection alot. Though I would think she would need to stream two 1080p videos to really drop your internet to those speeds.

If I were you, I would get a better router with QOS than can run FQ_Codel or Cake algorithm. These algorithms will shape traffic in an equitable manner to prevent your ping spikes when the internet is fully saturated.

 

[terrabursak14]

My thought is that there is an IP address conflict.

Or some other related mis-configuration.

Make and model router?

The router's logs (if available and enabled) may provide some clue.

Who has full admin rights to the router? You will need help from that person.

I can access router with admin rights but router is Vodafone H 300s, I don't think there are problems with that.

 

[terrabursak14]

You only have about 24mbps internet plan. If her phone is launching updates, or if she's streaming alot of video. That could drop your connection alot. Though I would think she would need to stream two 1080p videos to really drop your internet to those speeds.

If I were you, I would get a better router with QOS than can run FQ_Codel or Cake algorithm. These algorithms will shape traffic in an equitable manner to prevent your ping spikes when the internet is fully saturated.

I have modem from Vodafone. When I look her phone, there are WhatsApp, Instagram, Snapchat and some effect camera apps.

 

[Ralston18]

This Vodafone router? Actually modem/router combo.....

https://www.hepsiburada.com/vodafon...sl2-adsl2-fiber-modem-router-p-HBCV0000164KY0

User Manual?

https://n.vodafone.ie/content/dam/gowingmyself/pdfs/modem-setup-guide.pdf

Being able to access the router/admin pages is one thing. Having a configuration issue where multiple devices may have the same IP address (meaning a conflict) is another.

Plus, as posted by @gggplaya if the demands on the network are more than what the network can handle that is another set of problems.

All the more so if, again as mentioned, there are a number of apps, all continuously demanding bandwidth.

What to do:

First look at all 6 - 7 network devices, including your sister's phone. Ensure that there are no duplicate IP addresses. Post a list of those devices.

Look in the Vodafone router's admin pages - there may be some listing of device names, the assigned IP addresses, and the respective device MACs. Ensure that there are not any duplicates.

Second, on your computer run "ipconfig /all" (without quotes) via the Command Prompt and post the results.

Also run "arp -a" and likewise post the results.

Third, on your sister's phone temporarily disable all apps, etc. that she is running on the phone. Determine if the network crashes stop.

If, hopefully so, then enable each app again but only one at a time, to determine if there is any one app on her phone that when enabled causes the crashes to start again. Allow some time between each application to ensure that the app has had time to do updates or otherwise "phone home" and grab bandwidth while doing so.

 

[terrabursak14]

This Vodafone router? Actually modem/router combo.....

https://www.hepsiburada.com/vodafon...sl2-adsl2-fiber-modem-router-p-HBCV0000164KY0

User Manual?

https://n.vodafone.ie/content/dam/gowingmyself/pdfs/modem-setup-guide.pdf

Being able to access the router/admin pages is one thing. Having a configuration issue where multiple devices may have the same IP address (meaning a conflict) is another.

Plus, as posted by @gggplaya if the demands on the network are more than what the network can handle that is another set of problems.

All the more so if, again as mentioned, there are a number of apps, all continuously demanding bandwidth.

What to do:

First look at all 6 - 7 network devices, including your sister's phone. Ensure that there are no duplicate IP addresses. Post a list of those devices.

Look in the Vodafone router's admin pages - there may be some listing of device names, the assigned IP addresses, and the respective device MACs. Ensure that there are not any duplicates.

Second, on your computer run "ipconfig /all" (without quotes) via the Command Prompt and post the results.

Also run "arp -a" and likewise post the results.

Third, on your sister's phone temporarily disable all apps, etc. that she is running on the phone. Determine if the network crashes stop.

If, hopefully so, then enable each app again but only one at a time, to determine if there is any one app on her phone that when enabled causes the crashes to start again. Allow some time between each application to ensure that the app has had time to do updates or otherwise "phone home" and grab bandwidth while doing so.

https://ibb.co/J56MTV3

2 hosted at ImgBB

Image 2 hosted in ImgBB

ibb.co

https://ibb.co/gD2W0GG

 

[Ralston18]

Did you run ipconfig /all ?

Okay that you masked out the MAC's (physical addresses) but most of the other information is missing.

Does not appear that any network adapters are enabled....

The Vodafone modem/router appears to be at its' default IP address of 192.168.1. 1

And the computer from which you ran arp -a has the IP address of 192.168.1.2

There should be other devices appearing in the arp listing especially if there are 6 - 7 network devices.

My arp -a results:

PS C:\Users\XXXX> arp -a

Interface: 192.168.1.107 --- 0xc
Internet Address Physical Address Type
192.168.1.1 94-XX-3e-00-XX-XX. dynamic
192.168.1.101 00-XX-a9-00-XX-XX dynamic
192.168.1.102 84-XX-fd-00-XX-XX dynamic
192.168.1.255 ff-ff-ff-ff-ff-ff static


Where XX are my redactions.

FYI:

https://www.lifewire.com/what-is-a-private-ip-address-2625970

To help you learn more about the commands and your network and become a bit more comfortable with it all.

https://www.pcwdld.com/how-to-scan-network-for-ip-addresses

You can easily find other similar links and, actually quite a bit more....

Again - a two part troubleshooting effort:

1) Look for a duplicate IP address and/or some network configuration error. Make a simple sketch of your network to gain a "big picture" view of devices and connections. Label each device along with its name, IP address, and MAC. The sketch is for your use.

2) Determine if your sister's cell phone is actually running some app or multiple apps that are grabbing network bandwidth.

 

[terrabursak14]

Did you run ipconfig /all ?

Okay that you masked out the MAC's (physical addresses) but most of the other information is missing.

Does not appear that any network adapters are enabled....

The Vodafone modem/router appears to be at its' default IP address of 192.168.1. 1

And the computer from which you ran arp -a has the IP address of 192.168.1.2

There should be other devices appearing in the arp listing especially if there are 6 - 7 network devices.

My arp -a results:

PS C:\Users\XXXX> arp -a

Interface: 192.168.1.107 --- 0xc
Internet Address Physical Address Type
192.168.1.1 94-XX-3e-00-XX-XX. dynamic
192.168.1.101 00-XX-a9-00-XX-XX dynamic
192.168.1.102 84-XX-fd-00-XX-XX dynamic
192.168.1.255 ff-ff-ff-ff-ff-ff static


Where XX are my redactions.

FYI:

https://www.lifewire.com/what-is-a-private-ip-address-2625970

To help you learn more about the commands and your network and become a bit more comfortable with it all.

https://www.pcwdld.com/how-to-scan-network-for-ip-addresses

You can easily find other similar links and, actually quite a bit more....

Again - a two part troubleshooting effort:

1) Look for a duplicate IP address and/or some network configuration error. Make a simple sketch of your network to gain a "big picture" view of devices and connections. Label each device along with its name, IP address, and MAC. The sketch is for your use.

2) Determine if your sister's cell phone is actually running some app or multiple apps that are grabbing network bandwidth.

There are 4 devices connected. No duplicate IPs. I run that command. I will reset phone, and install needed apps only. I don't know what she do but she destroys internet. Thanks for your help. I will write result when I reset.