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First, check durability specs like drop ratings, shock resistance, and whether the watch uses scratch-proof glass. Then test battery life in real conditions, cold mornings and long shifts highlight weakness fast. Lastly, see if it supports voice calls or message reading if you’re hands-on in the field.

If you’re mainly calling, texting, and using minimal data, check the plan’s expiration period and whether value rolls over. Low cost is great, but if the prepaid account expires after 30 days of no added funds, you might lose your number or balance sooner than expected.

Don’t overlook device compatibility and “network ownership”: MVNOs often rent network time and may reduce priority on tower access. Also, initial promotional pricing can spike after a year, so compare the long-term cost, not just the introductory deal.

Know the hidden renewal and upgrade terms: initial promos may double in cost after year one, or the plan may hike once you connect to partner towers. Also verify if your current phone works with the proposed network’s frequency bands to avoid buying a pricey new device.