T-Mobile Experience Plans: Bookmarklet to check when your 5-year price guarantee expires

This bookmarklet lets you check the date your 5-year price guarantee is set to expire on your T-Mobile account. How to use it: Copy the bookmarklet code below. Bookmark any webpage in your browser. Edit the bookmark and replace the URL with the bookmarklet code. Run the bookmarklet on the T-Mobile website while you're logged in. ​ javascript:fetch("/self-service-dam/v1/lookup-affiliation-info-v2",{method:"POST",headers:{"content-type":"application/json"},body:'{"affiliationType":"PriceGuarantee"}'}).then(r=>r.json()).then(d=>{let p=d?.find?.(x=>x.affiliationType=="PriceGuarantee");alert(p?Price Guarantee: ${p.subscriptionStatus}\nStart: ${p.verificationAddedDate}\nExpires: ${p.verificationExpiryDate}:"No Price Guarantee Detected")});