Samsung Galaxy Watch Ultra (2025): problems, parts and running costs

Checked: 2026-10-19

Summary

The headline LTE feature is the part to test first: owners report the watch going into cooling mode after minutes of standalone LTE streaming, and one owner logged repeated failed Verizon activations. Running costs are close to zero by default — no subscriptions, no prescribed consumables — with bands and a charger as the only wear items. Samsung’s December 2025 MSRP sheet lists the Titanium Blue watch at $649.99, Best Buy ran it at $549.99 in a promotion that ended in September 2026, and above $600 the 2026 Ultra2 is the better spend.

Common problems and fixes

LTE overheating and cooling mode — owners describe standalone Spotify and LTE streaming pushing the watch into cooling mode after roughly 5–15 minutes (July 2025 and August 2025 reports), and a February 2026 Samsung Community user on a 2025 Ultra reported emergency-only mode while streaming on cellular; no failure rate is published. Response: stop LTE streaming, let the watch cool naturally, check software updates and carrier signal; do not cover or refrigerate it. [6][7][8]
Carrier eSIM activation failures — an August 2025 owner logged repeated failed Verizon activations despite carrier support effort; confirm your carrier supports the watch’s eSIM and test it inside the return window. [9]
Battery shorter than the 60/100-hour claims — Samsung claims up to 60 hours with the always-on display and up to 100 hours in power-saving mode; on the shared 2024 hardware Android Central first saw about 40 hours, then 60 hours with 21% remaining after an update, Wareable landed at 35–55 hours, and a June 2026 owner reported about 10% lost overnight; expect a charge every two or three days with GPS, LTE and the always-on screen in play. [4][5][12]
Missing sleep and Energy Score data — a January 2026 owner reported about 30 days of missed sleep and score data on a 2025 Ultra, with a replacement recording only one night successfully; strap fit, tattoos, settings or sensor software can all contribute. [10]
Post-update screen flashing — a March 2026 owner of the 2025 Ultra reported the screen blinking and apps and widgets becoming inaccessible after a February patch; a full reset and restore resolved a comparable issue for others, so back up before resetting and seek service if the watch stays unusable. [11]
Bulky 47mm case — 60.5g before the strap with no smaller Ultra; bulky under sleeves and during sleep for small wrists. [4]

Parts and consumables

Official Galaxy Watch Ultra Marine Band, Dark Gray (ET-SNL70MBEGUJ) — $79.99 at Samsung US, October 2026; replace when the strap tears, the buckle breaks or it wears; no set replacement interval. [13]
Official Galaxy Watch Ultra Peakform Band, Dark Gray (ET-SBL70MBEGUJ) — $79.99 at Samsung US, October 2026; replace on loss or physical wear; no set interval. [14]
Official Galaxy Watch Ultra Trail Band, Orange (ET-SVL70MOEGUJ) — $79.99 regular at Samsung US, with one page showing a $76.00 promotion, October 2026; keep dry and clean after sweat; replace on damage, not on a schedule. [15]
Samsung EP-OL300BBEGUJ magnetic wireless charger — $29.99 at Best Buy, October 2026 (regular $39.99); documented compatible with the Watch Ultra and required because phone PowerShare does not work with this watch’s redesigned sensor back; replace on loss or failure. [16][1]

Yearly running cost

Mandatory subscriptions: $0/year — ordinary Bluetooth and Wi-Fi use and basic Samsung Health need no subscription. Optional LTE carrier line: a monthly recurring charge that varies by carrier and plan, with no single verified price; get the terms in writing. Electricity, illustrative only: the 590 mAh cell stores about 2.27Wh, so 150 full charges a year at 75% efficiency and $0.20/kWh is about 0.454 kWh from the wall, roughly $0.09/year. Parts: $0/year prescribed; bands and the charger are loss and wear items — buying one genuine $79.99 Marine band every year would cost $79.99/year, a hypothetical rather than a measured wear rate. Optional Samsung Care+ appeared at $3/month or $49 for a two-year term at Samsung’s checkout in October 2026; confirm eligibility for an existing watch. [13][16][18]

When it is a good buy

Check the seller’s exact SKU first: Samsung’s December 2025 MSRP sheet and Best Buy list the Titanium Blue watch as SM-L705UZB1XAA, and the SM-L705UZBQXAA code could not be matched to a known variant in the checked material, so confirm the label and UPC rather than assuming the suffixes are interchangeable. [3][2]

$649.99 MSRP per Samsung’s December 2025 sheet and the US configurator; Best Buy advertised $549.99 in a promotion that ended September 8, 2026, and a later category search indexed $499.99; Micro Center listed $649.99. [3][1][2][17]
$350 or less: very strong. $351–425: attractive. $426–500: reasonable if LTE and the extra storage matter. $501–550: conditional. $600–650: poor value. [19][20]
Named alternatives: the Galaxy Watch Ultra2 (2026) at $699.99 adds an 800 mAh battery, a 5,000-nit display, the Snapdragon Wear Elite chip, IP69K and EN13319 — the better spend once the 2025 watch sits above $600; the Galaxy Watch8 44mm LTE at $379.99 (Bluetooth $329.99) is far lighter when the rugged case is not needed; a seller-refurbished 2024 Ultra (32GB) was listed around $249.99 at Target for bargain buyers who verify IMEI, storage and LTE eligibility. [20][21][22]