Is the Samsung Galaxy A16 enough for Maps and WhatsApp?

Yes — for someone who only uses Maps and WhatsApp, the Samsung Galaxy A16 should be more than enough.

Why it makes sense for that use case:

• It has a 5000mAh battery, which is plenty for a day of light-to-moderate use.
• The 6.7-inch Super AMOLED display is large and easy to read for maps and messages.
• Samsung has advertised long software and security update support for the Galaxy A16, which is a plus if you want to keep the phone for several years.

A couple of practical notes:

• For Maps, the main thing you’ll want is decent GPS performance and stable battery life; the A16 should handle that fine.
• It’s not a performance-focused phone, so it’s not ideal for heavy gaming or lots of multitasking, but that doesn’t matter much for Maps and WhatsApp.
• It does not have a traditional headphone jack, and it may not include a wall charger in the box, so those are worth checking before buying.

So overall: yes, it’s a good budget choice for that simple use case, though it’s more accurate to say it’s sufficient and practical rather than "excellent" in every sense.