Yes, you can access the NCERT textbooks and solutions on your mobile phone or tablet for CBSE Class 1. Here is a detailed explanation:

1. NCERT Textbooks:
You can access the NCERT textbooks for Class 1 on your mobile phone or tablet in the following ways:

a. Official NCERT Website:
- Open the web browser on your mobile phone or tablet.
- Go to the official website of NCERT (www.ncert.nic.in).
- Look for the "Textbooks" section on the homepage.
- Select the Class 1 option.
- You will find a list of subjects and textbooks available for Class 1.
- Click on the desired subject and textbook to open it.
- The textbook will be displayed on your screen, and you can read it on your mobile phone or tablet.

b. EduRev App:
- Download and install the EduRev app from the Google Play Store or Apple App Store.
- Open the app on your mobile phone or tablet.
- Sign up or log in to your EduRev account.
- Search for "CBSE Class 1 NCERT textbooks" in the search bar.
- You will find a list of Class 1 textbooks available on EduRev.
- Select the desired textbook to open it.
- The textbook will be displayed on your screen, and you can read it on your mobile phone or tablet.

2. NCERT Solutions:
You can access the NCERT solutions for Class 1 on your mobile phone or tablet in the following ways:

a. Official NCERT Website:
- Follow the same steps mentioned above to reach the official NCERT website.
- Look for the "Exemplar Problems" section on the homepage.
- Select the Class 1 option.
- You will find a list of subjects and solutions available for Class 1.
- Click on the desired subject and solution to open it.
- The solution will be displayed on your screen, and you can read it on your mobile phone or tablet.

b. EduRev App:
- Open the EduRev app on your mobile phone or tablet.
- Sign up or log in to your EduRev account.
- Search for "CBSE Class 1 NCERT solutions" in the search bar.
- You will find a list of Class 1 solutions available on EduRev.
- Select the desired solution to open it.
- The solution will be displayed on your screen, and you can read it on your mobile phone or tablet.

Note: Both the official NCERT website and the EduRev app provide free access to NCERT textbooks and solutions for Class 1. Ensure that you have a stable internet connection to access these resources.