Centers T-Mobile Tools imports supported billing details into the Plan Calculator at https://tmo.centers.diy. Importing a bill is optional.

Information processed and shared

When you choose to import, the extension processes the T-Mobile billing response locally in your browser. It sends only supported plan types, voice-line counts, AutoPay discount status, recognized promotion IDs and Insider codes, applicable discount counts, and shared voice-plan charges and discount amounts.

The import excludes names, line nicknames, custom labels, phone numbers, email addresses, account and subscriber identifiers, addresses, payment details, passwords, login credentials, and T-Mobile authentication cookies. It does not send the full billing response, bill document, page HTML, or screenshots.

You sign in directly with T-Mobile. We do not ask you to provide your T-Mobile login credentials.

How information is transferred and used

The extension opens an HTTPS calculator URL containing the permitted fields. The calculator uses them to populate selections, estimate charges, and compare billing amounts with its pricing rules.

The website validates and stores permitted imports, then redirects to a short link. Identical imports are stored once. Saved imports are retained long term to evaluate and improve pricing calculations. They are not linked to visitor connection information or used to identify individual accounts.

Links and website information

Import URLs may remain in browser history and website request logs. Anyone with an import URL or its short link can view the permitted details it represents.

The website uses Cloudflare for delivery, security, and web analytics. Website requests disclose connection information to its infrastructure. Excluding identifying bill fields does not make the entire website visit anonymous.

The website's proxy logs can contain import URLs and amounts. These logs do not record visitor IP addresses and are deleted after approximately five weeks. Separate server logs use shortened IP addresses. Further information about hosting, analytics, browser storage, and retention is available in the website policy linked below.

Local storage and your choices

The extension discards its temporary response copy after processing. Version 0.6.3 does not create, download, or upload diagnostic reports. Reports downloaded by earlier development versions remain under your control.

You can use the calculator without importing, remove the extension, and clear saved links or site data. Information already transmitted cannot be recalled by cancelling or removing the extension.

Privacy questions or requests: privacy@centers.diy
Website privacy policy: https://tmo.centers.diy/privacy