Samsung Galaxy S21

Pros

• Significantly more responsive than older Samsung models (like the S9) or modern entry-level budget phones.
• Compact size by current industry standards, making it easier to handle.
• Remains a solid daily driver for users who prioritize value on the used or refurbished market.

Cons

• Software and security update support is expected to end within the next year.
• Persistent camera shutter lag makes it difficult to photograph moving objects.
• Reports of battery drain, lag, and stutters when running newer software like One UI 7.
• Potential hardware reliability issues, specifically regarding the waterproof seal.

Caveats

• A significant portion of the community is currently looking to upgrade away from this model, suggesting it may not be a long-term solution.
• Battery health on used units can be inconsistent, with some users reporting limited screen-on time.

Best for

• Budget-conscious buyers looking for used flagship performance instead of a new low-end device.
• Users who prefer a smaller smartphone footprint.

Avoid if

• You require more than a year of guaranteed security and software updates.
• You frequently take photos of pets, children, or other moving subjects.
• You are sensitive to minor UI stutters and battery degradation.