Samsung Galaxy A Series Fingerprint Recognition: A Complete Generational Breakdown

Introducción

Fingerprint recognition has become an everyday feature for smartphone users. For Samsung’s Galaxy A series, which bridges the gap between premium Galaxy S/Note devices and entry-level Galaxy M series, the fingerprint solution varies significantly across generations and models. From rear-mounted sensors to sleek under-display technology, the A series showcases Samsung’s evolving approach to security and usability.

Evolution of Fingerprint Technology in Samsung A Series

When fingerprint scanners first appeared on Galaxy A phones, they were mostly rear-mounted. As design trends shifted toward full-screen displays, Samsung transitioned to side-mounted and under-display solutions. The A series, being a diverse lineup, reflects this mix of old and new technologies depending on model positioning and price.

Types of Fingerprint Recognition in A Series

Under-Display Optical Fingerprint

Most common in mid-to-upper A series models (A5x, A7x).
Uses light to capture a fingerprint image.
Typically located in the lower section of the screen.

Under-Display Ultrasonic Fingerprint

Rare in A series (mainly reserved for Galaxy S/Note flagships).
Uses sound waves for more secure scanning.

Side-Mounted Fingerprint

Integrated into the power button.
Quick and reliable.
Found in budget and mid-range A series phones.

Rear-Mounted Fingerprint

Legacy design, positioned at the back.
Common in older A2x and A3x models.

A5x / A7x Series – The Mainstream Under-Display Leaders

Galaxy A50 Series

The Galaxy A50 was the first A series phone to adopt under-display optical fingerprint recognition. While innovative, its first-gen performance was criticized for being slower and less accurate.

Galaxia A51 / A52 / A52s / A53 / A54 / A55

Samsung refined the technology here. These models delivered faster recognition and improved reliability compared to early attempts.

Galaxy A70 / A71 / A72 / A73

These higher-tier A7x devices also adopted under-display sensors, aligning them closer to Samsung’s premium lineup.

A3x Series – Gradual Transition

Galaxy A33 (Side-Mounted)

Instead of under-display, the A33 relied on a side fingerprint scanner, offering speed and cost efficiency.

Galaxy A34 (Under-Display Optical)

The A34 marked a surprising shift by adopting an under-display scanner, bringing premium design to mid-range.

Galaxy A35 / A36 (Side-Mounted Again)

Curiosamente, Samsung reverted back to side-mounted sensors in successors, showing the balancing act between cost and user experience.

A2x Series – Budget-Friendly Choices

Galaxy A20 / A24 / A25 / A26

All of these feature side-mounted scanners.
Cost considerations make this a practical choice.

Galaxy A30 / A31

These relied on rear-mounted scanners, showing their entry-level positioning.

Special Cases in A Series

Galaxy A80

Unique for its rotating camera design, this phone used an under-display optical fingerprint, aligning with its flagship-like feel.

Galaxy A82 / A90

Both included under-display scanners, further blurring the line between premium and mid-range.

A56 (Market Specific)

Some regional models like the A56 follow the design of A35, featuring side-mounted sensors.

Comparison Table of Fingerprint Types by Model

Modelo	Fingerprint Type
A15, A16	Side-mounted
A20	Side-mounted
A24, A25, A26	Side-mounted
A30	Montado en la parte trasera
A31	Montado en la parte trasera
A32 4G	Side-mounted
A33 5G	Side-mounted
A34 5G	Under-display
A35, A36, A56	Side-mounted
A50, A51	Under-display
A52, A52s, A53, A54, A55	Under-display
A70, A71, A72, A73	Under-display
A80	Under-display
A90	Under-display

How to Identify Fingerprint Type Before Buying

Checking Official Specs

Always look at Samsung’s official website or trusted retailers. Specifications clearly state the fingerprint type.

Design Cues

Side-mounted: sensor is on power button.
Montado en la parte trasera: sensor is visible on the back cover.
Under-display: front screen has no visible sensor.

Release Year Reference

Post-2021, most mid-high A series adopt under-display recognition, except for budget lines.

Pros and Cons of Each Fingerprint Method

Under-Display Optical

Ventajas: Premium feel, clean design, futuristic.
Contras: Can be slower, struggles with wet fingers.

Side-Mounted

Ventajas: Fast, accurate, affordable.
Contras: Less futuristic, placement may be awkward for left-handed users.

Rear-Mounted

Ventajas: Cheap, confiable.
Contras: Outdated design, inconvenient when phone is on a table.

User Experience Insights

Users often find side-mounted scanners faster and more consistent. Under-display looks futuristic but can lag under certain conditions. Montado en la parte trasera, while functional, is now considered outdated and less ergonomic.

Why Samsung Chooses Different Solutions

Samsung tailors fingerprint solutions based on:

Cost efficiency (budget devices get side-mounted).
Market positioning (mid-high get under-display).
User preference trends (practicality vs. premium feel).

Future of Fingerprint Recognition in A Series

Mirando hacia adelante, Samsung may unify the A series under a single solution. With ultrasonic scanners becoming more affordable, we may see a shift away from optical sensors. AI enhancements could further improve accuracy and speed, making fingerprint scanning even more seamless.

Conclusión

The Samsung Galaxy A series demonstrates how fingerprint recognition technology evolves with market demands. If you want a sleek under-display fingerprint, focus on the A5x y A7x serie, plus select models like the A34 5G, A80, and A90. Budget users can rely on the speed and reliability of side-mounted scanners. Ultimately, Samsung’s choices balance cost, design, and usability, ensuring the A series remains a versatile lineup.

Preguntas frecuentes

1. Which Galaxy A series is best if I want under-display fingerprint?
The A5x and A7x models (A53, A54, A55, A71, A73) are your best bet.

2. Is under-display fingerprint faster than side-mounted?
Not always—side-mounted sensors are typically faster, though under-display looks more premium.

3. Do all Galaxy A5x models have under-display fingerprint?
Sí, starting from the Galaxy A50 series, all A5x models include optical under-display sensors.

4. Why did Samsung keep side-mounted fingerprint on some new models?
It’s a cost-saving choice and ensures fast performance for budget and mid-tier phones.

5. Will future Galaxy A phones use ultrasonic fingerprint?
Possibly. As costs drop, Samsung may introduce ultrasonic technology into the A series.

Ley

Hola, Soy loly, El financiador de MophoneParts.com, He estado ejecutando una fábrica en China que hace piezas de teléfono móvil para 8 años ahora, y el propósito de este artículo es compartir con usted el conocimiento relacionado con las piezas de los teléfonos celulares desde la perspectiva de un proveedor chino.