Windows 7: Internet ?

Please help me my sister always keep disturbing me when I am downloading some softwares. She always watch youtube videos on her phone through my internet so is there any way to control the speed priority so I won't get any disturbance while downloading.

Some routers have the ability to set up QOS rules to allow you to attempt to control the priority of the data traffic. My Netgear has such a setting but TBH, it doesn't appear to make any difference.

Are you Wired to the router or connecting wirelessly?

If wired then you can log in to the router settings and turn off the WiFi section. Then she will connect over the Cell 3/4G system and not over the wireless internet connection.

Is there any software to contol ?

To control what? Her connection to the router? Not really. Have you read the replies.

There is a way in which you can limit Wi-Fi bandwidth broadcast , a router with the capability to set Quality of Service (QOS) priorities is required. Generally, incoming and outgoing traffic comes through the router on specific ports. Setting the QOS priorities enables the router administrator to control bandwidth traffic by setting certain ports or device MAC addresses to high priority and others to normal or low priority. These settings will give high priority devices and ports first access to bandwidth, while limiting bandwidth for the lower priority devices and ports.

Note: QoS only prioritize traffic it does not limit them. It means if you are opening a web page while someone is streaming then using QoS your page will load a few seconds before the streaming begins.

Hope this helps