Playbooks · The Android flagship flip · updated September 19, 2026
Galaxy S24 Ultra
The S24 Ultra is the Android phone that holds value: titanium frame, S Pen in the body, 200MP camera. Fewer flippers work Samsung, so under-priced units sit longer. The traps are different from an iPhone: Google account lock instead of iCloud, carrier-locked units everywhere, and screen burn-in.
This week in Salt Lake City · from the desk, not a writer
The ceiling is for exactly this: Galaxy S24 Ultra, 256GB · unlocked · any standard color. Evidence reviewed Sep 9, confidence medium. eBay fees 13.6% + $0.40 + ~$12 shipping.
Is it the right one?
- Settings → About phone: model SM-S928U or SM-S928U1 (US unlocked). SM-S928B / N are international and may miss US 5G bands; the ceiling assumes a US model.
- Storage under About phone → Storage: 256 GB.
- Flat screen with squared corners (the S23 Ultra had curved edges), S Pen slot on the bottom left.
Before you drive
- Ask for the IMEI (Settings → General → About, or dial *#06#). Run it through a free IMEI checker for blacklist and lock status. Ask if it is paid off. If they will not send it, do not go.
- In the parking lot, before money changes hands: the phone must be signed out of iCloud / the Google account in front of you, then erased. "I will do it later" means no.
- Then the checks below, in order. Ten minutes. Nobody who is selling a clean phone minds.
- Pay only after the phone finishes setup on your SIM and makes a call.
Bring
- Your own SIM (to make a call on the spot)
- A charging cable and a power bank
- A paperclip or SIM tool
- A flashlight (your other phone) for the frame and lenses
- Cash, counted at home, in an envelope
What to check in person
- Google account removed before you pay: Settings → Accounts → remove, then a factory reset in front of you and get through setup. A phone that asks for the previous owner's Google account after reset is FRP-locked and useless.
- Carrier: Settings → Connections → SIM manager after inserting your SIM. Carrier-locked S24 Ultras are common because carriers sold most of them. "Unlocked" must be proven with your SIM.
- Burn-in: open a full-screen gray or white image and look for ghosted keyboards or status bars. AMOLED burn-in is permanent and buyers see it instantly.
- S Pen: pull it out (a click), write on the screen, hover for the pointer, press the button for a photo. Missing or dead S Pen is a $40 hit.
- Cameras: 0.6× / 1× / 3× / 5× / 10×. Each lens must switch without a black frame.
- Samsung Financing / "Knox Guard" lock: a phone bought on Samsung's own financing can be remotely locked. Ask if it was bought outright.
- Screen protector lifted at a corner often hides a cracked glass. Peel it or price it as cracked.
The desk's own checklist for this unit
- Match the model and storage in Settings to the listing.
- Confirm the IMEI is clean, unlocked, paid off, and free of activation or account locks.
- Test biometric unlock, cameras, speakers, microphones, buttons, charging, Wi-Fi, Bluetooth, and cellular service.
- Check battery health, repair history, liquid exposure, screen, frame, and back glass.
- Confirm the original S Pen is present and its button and air actions work.
- Reject activation-locked, carrier-locked, financed, MDM-managed, blacklisted, cracked, parts-only, or materially defective phones.
- Online sold and refurbished prices are market anchors, not a guarantee of the founder local resale price.
What goes wrong
- The code text
- They ask you to read back a "verification code" they just texted you. That is a Google Voice or Marketplace account takeover. Never share a code. The app hides listings with a code in the title for this reason.
- Financed, not paid off
- A phone on a carrier payment plan works fine today and gets blacklisted the month they stop paying. "Unlocked" is not "paid off". Ask, and check the IMEI with the carrier.
- iCloud / Activation Lock
- If Find My is still on, the phone is a brick to you. They must sign out in front of you. No exceptions, no "I forgot my password".
- Wrong storage, wrong model
- Titles say Pro Max when it is a Pro, 256 when it is 128. Settings → About settles it. The ceiling is for one exact model and storage.
- Repaired with the wrong parts
- A replaced screen or battery shows up in Settings → General → About → Parts and Service History on recent iPhones, and as a missing True Tone toggle. Non-genuine parts cut the resale price.
- Too good, in a hurry
- A phone $150 under every other listing, "must sell tonight", meet somewhere odd. Walk. The app flags too-good asks as INVESTIGATE, not POUNCE.
- Shipping only
- Local flips are cash, in person. Anyone insisting on shipping, Zelle, Venmo, Cash App or a "deposit to hold it" is not selling you a phone.
The message
What the app writes for you, one tap, never above the ceiling. If the ask is under $350 you meet the ask; if it's over, you offer the ceiling.
Hi! Is the S24 Ultra still available? I can pick up today with cash near Salt Lake City. Would you take $350?
Then, before you drive: "Could you send a quick video of it powering on and working? Then I'll head straight over with cash."
Where it sells
- Local cash first: relist on Marketplace and OfferUp at the sells-for price with your own photos, in daylight, on a plain background, showing the About screen. Good units go in 2–5 days.
- eBay is the floor, not the goal: the median above minus roughly 13.6% fees, $0.40, and shipping is what actually lands in your account. Use it when local is slow or for the models that sell better nationally.
- Swappa and trade-in programs (Apple, Best Buy, carriers) set a hard floor. Know the trade-in number before you buy; it is the worst case if you cannot sell it.
- Never sell locked, financed or damaged units as clean. Your name is the business.
State the model number in the listing (SM-S928U). Android buyers ask.
Why this one
Less competition from other flippers, buyers who want exactly this phone and will pay for it, and sellers who priced it against a two-year-old iPhone.
In the app