At any time after activation, you can request to switch your Google Fi plan with the Google Fi app 
How to switch your plan
- Sign in to your account on the Google Fi app
- Tap Manage plan.
- Under "Actions," tap Switch plan.
- Follow the instructions.
You can choose to switch plans once a month. The change doesn't happen until your next bill, except when you switch from Simply Unlimited to Unlimited Plus.
After you change plans, you and any group members get a notification at the top of your account. The notification says when the new plan starts.
If you change from Unlimited Plus to Flexible or Simply Unlimited, after 7 days, you can lose your Google One benefits.
To keep your Google One benefits:
- Set up payment for Google One.
- After you switch your Google Fi plan, in the pop-up notification, click the link.
How to cancel a scheduled switch
Important: You can schedule a plan switch for the start of your next billing cycle. If you do so, you can cancel the switch and stay on your current plan type any time before the start of your next billing cycle.
- Sign in to your account on the Google Fi app
- Tap Manage plan.
- At the top of the "Account" section, find a notification of your scheduled plan switch.
- Tap Cancel switch.
How group plans compare to individual plans
Group plans are different from individual plans in which:
- Only the group plan owner can switch plan types.
- All members of a group plan are on the same billing plan.
- If the group owner switches billing plans, everyone in the group switches over to the new plan.
Manage your bill changes after changing plans
If you change from Flexible to Simply Unlimited or Unlimited Plus, your first bill can be more than usual.
Your bill includes:
- Charge for the next month of Unlimited Plus plan that prepaid owners and members pay.
- A $10 USD per GB charge for postpaid owner and members who used data in the last bill cycle.
- Post pay for extra services you used in the last bill. Extra services can include:
- International calls
- Get your data back to full speed
- Prorated costs for new members
For example:
You just switched from the Flexible plan to an individual Simply Unlimited plan. In your last month, you used $20 USD of data on your Flexible plan. Your next bill includes:
- $20 USD for data on your Flexible plan, which you postpay.
- $50 USD for your Simply Unlimited plan, which you prepay.
To find your current billing cycle:
- Sign in to your account on the Google Fi app
- At the top of your screen, find the notification "Your current cycle ends in X days."
How to manage bill plans in Pixel Pass
When you subscribe to Pixel Pass, you can switch between billing plans. Your first bill can be higher than usual since it may include prepaid and postpaid charges. To make your billing simple, you can schedule a plan switch.