Hey there, sldkcjhchxhx.
We understand that you are seeing the data transfer was cancelled when trying to transfer your data from your one iPhone 7 to another iPhone 7.
You can see all possible ways to transfer your data in the article below:
Set up your iPhone, iPad, or iPod touch
Use Quick Start to transfer data to a new iPhone, iPad, or iPod touch
We understand that both devices are connected to Wi-Fi, but you could also try connecting to another Wi-Fi network to see if that might help.
Connect to Wi-Fi on your iPhone, iPad, or iPod touch
Restarting both devices may seem a simple step, but might also help:
Restart your iPhone
If the issue continues or if we have misunderstood the situation, please answer the following questions to help us better understand what is going on:
- Can you tell us how you're transferring your data? Is it by choosing to restore a backup either with iCloud or iTunes/computer or with Quick Start
- If you are using Quick Start, are the devices close to each other? If not, please place the two devices closer and see if that helps.
Let us know if trying another method helps or if you have any other questions or concerns. Have a great day.