If you have an Android phone, you can easily upload your photos and videos to Google Photos. The service provides a resumable upload feature, which allows you to resume your upload whenever you'd like. Just make sure you keep a copy of the photos you want to upload, as Google will delete these if you don't finish them in a timely manner. Once the photos are uploaded to the service, you'll be able to use them on your phone.

Alternatively, you can manually select your photos and videos and upload them to Google Photos. Just make sure that you have a stable internet connection, and make sure that your phone's backup and synchronization are turned on. Another important thing to keep in mind before uploading your photos is that the files must be no larger than 75 MB or 100 megapixels, and you must choose a file type that does not exceed 10GB.

You can also upload photos directly from your phone by downloading the Google Photos app and adding them to your Google account. Most Android devices have the Google Photos app installed. Once you've downloaded it, you can select which option to use for backing up your photos. If you don't have Wi-Fi at your home, you can opt to use mobile data for backups. However, be aware that this method can easily eat up your data allowance.