Which specific phone and which watch do you mean (brand and model)?

If you want a quick general answer while you pick models:

• Phones: most recent flagship phones use IP68 (dust-tight, water immersion protection). Changes usually mean higher depth/time ratings (e.g., IP68 rated for 1.5–6 m for 30 minutes) or addition of IP69K (high‑pressure/steam wash) on some rugged models.
• Watches: fitness/smartwatches are commonly rated by ATM (e.g., 3–5 ATM = splash/swim safe; 10–30 ATM or explicit “100 m” = suitable for snorkel/diving). Some newer rugged watches move from 5 ATM to 10–30 ATM or add ISO 22810 / EN 13319 compliance for diving accessories.

If you tell me the exact phone and watch models, I’ll look up the precise, up‑to‑date water‑resistance ratings and list how they changed compared with the previous generation.