Intex Aqua Strong 5.1 Plus Full Specifications, Price and Review
The Intex Aqua Strong 5.1 Plus is a compact entry-level dual SIM 4G smartphone from Intex Technologies, launched in March 2017. Built around a slim 10.1mm profile weighing just 150.6 grams, it targets buyers who want a lightweight 4G phone at the lowest possible price. It runs Android 6.0 Marshmallow on a 1.3GHz quad-core processor with a 5-inch display, 5MP rear camera and 2MP front camera. One important distinction to know before buying — the Aqua Strong 5.1 Plus supports 4G LTE Band 40 but does not support 3G, falling back directly to 2G in areas without 4G coverage. Available in Gold and Black, this guide covers the complete Intex Aqua Strong 5.1 Plus specifications, key trade-offs and everything you need to know.
Important: No 3G Support — Read Before Buying
This is the most critical specification to check before purchasing the Intex Aqua Strong 5.1 Plus. Unlike most other budget 4G phones which support 2G, 3G and 4G, the Aqua Strong 5.1 Plus supports only 2G GSM and 4G LTE — there is no 3G fallback on either SIM slot. In practical terms, this means:
- In areas with strong 4G Jio, Airtel or Vodafone-Idea coverage — the phone works perfectly
- In areas where only 3G is available — the phone will fall back to slow 2G, not 3G
- Rural areas or locations with patchy 4G — connectivity may be noticeably slower than expected
If you are in a city or town with solid 4G coverage this is not a concern. But for buyers in semi-urban or rural areas, this trade-off is worth considering before choosing the Aqua Strong 5.1 Plus over a 3G-capable alternative.
Intex Aqua Strong 5.1 Plus — Key Highlights
- Slim 10.1mm body weighing just 150.6 grams — among the lighter budget phones
- Dual SIM 4G LTE with Band 40 on both slots
- 5-inch display at 480×854 pixels (197 PPI)
- 5MP rear camera with flash and 2MP front camera
- 1.3GHz quad-core processor with 1GB RAM
- 8GB internal storage expandable up to 64GB via microSD
- 2000mAh battery — compact capacity for light usage
- Android 6.0 Marshmallow
- Wi-Fi, GPS, Bluetooth, FM Radio and 3.5mm headphone jack
- Available in Gold and Black
- No 3G support — 4G LTE and 2G GSM only
- No on-board sensors — no accelerometer, proximity or light sensor
Intex Aqua Strong 5.1 Plus — Available in Gold and Black
Intex Aqua Strong 5.1 Plus Full Specifications
| Specification | Details |
|---|---|
| General | |
| Release Date | March 2017 |
| Form Factor | Touchscreen |
| Dimensions | 143.10 × 73.10 × 10.10 mm |
| Weight | 150.6 grams |
| Battery Capacity | 2000 mAh |
| Removable Battery | No |
| Colours | Gold, Black |
| Display | |
| Screen Size | 5 inches |
| Touchscreen | Yes |
| Resolution | 480 × 854 pixels (FWVGA) |
| Pixel Density | 197 PPI |
| Hardware | |
| Processor | 1.3GHz Quad-core |
| RAM | 1 GB |
| Internal Storage | 8 GB |
| Expandable Storage | Yes, microSD up to 64 GB |
| Camera | |
| Rear Camera | 5 MP with Flash |
| Front Camera | 2 MP |
| Software | |
| Operating System | Android 6.0 Marshmallow |
| Connectivity | |
| Wi-Fi | Yes |
| GPS | Yes |
| Bluetooth | Yes |
| NFC | No |
| Infrared | No |
| USB OTG | No |
| Headphone Jack | 3.5mm |
| FM Radio | Yes |
| Number of SIMs | 2 (Dual SIM) |
| SIM Type | Micro-SIM × 2 |
| Network Support | 2G GSM + 4G LTE only (no 3G) |
| 4G Band 40 (India) | Yes — both SIM slots |
| Sensors | |
| Proximity Sensor | No |
| Accelerometer | No |
| Ambient Light Sensor | No |
| Gyroscope | No |
| Compass / Magnetometer | No |
| Barometer | No |
| Temperature Sensor | No |
No Sensors — What This Means for Daily Use
The Intex Aqua Strong 5.1 Plus lists no on-board sensors — not even a proximity sensor, accelerometer or ambient light sensor. In practical terms this means:
- No auto-rotation — the screen will not rotate when you tilt the phone sideways
- No auto-brightness — screen brightness must be adjusted manually at all times
- Screen stays on during calls — without a proximity sensor the screen will not turn off when held to your ear, which can cause accidental touches during calls
- No step counting or fitness tracking — accelerometer-dependent health apps will not work
- No VR support — gyroscope-based VR headset apps are not compatible
For basic calling, messaging and light social media use this is acceptable. For anything beyond, it is a significant limitation to factor into your buying decision.
Intex Aqua Strong 5.1 Plus Design and Build
At 10.1mm thickness and 150.6 grams, the Aqua Strong 5.1 Plus is genuinely slim and light for a budget 4G phone — most competing devices at this price were thicker and heavier. The compact 143.10 × 73.10mm footprint makes it one of the more pocketable 5-inch phones available at launch. The Gold and Black colour options give it a premium appearance that belies its entry-level price. The non-removable 2000mAh battery is on the smaller side, but the slim build is a direct trade-off for keeping the phone lightweight.
Is the Intex Aqua Strong 5.1 Plus Worth Buying in 2025?
The Intex Aqua Strong 5.1 Plus was a niche choice even at launch — best suited for buyers who specifically needed a slim, lightweight 4G phone and were in an area with reliable 4G coverage. The absence of 3G, sensors and meaningful storage make it hard to recommend for general use in 2025. Android 6.0 Marshmallow is also long past its support window. For a modern equivalent with full sensor support, 3G fallback, and current Android, consider the Lava Yuva 3, Samsung Galaxy A05e or Nokia C12 — all available at comparable entry-level price points with significantly better feature sets.
Frequently Asked Questions
Does the Intex Aqua Strong 5.1 Plus support 4G in India?
Yes. The Intex Aqua Strong 5.1 Plus supports 4G LTE Band 40, used by Airtel, Jio and Vodafone-Idea in India. Both Micro-SIM slots are 4G enabled. However, this phone does not support 3G — it falls back directly from 4G to 2G in areas with weak coverage.
Does the Intex Aqua Strong 5.1 Plus support 3G?
No. This is an important distinction. The Aqua Strong 5.1 Plus supports 2G GSM and 4G LTE only. There is no 3G support on either SIM slot. In areas without 4G signal the phone will drop to 2G, not 3G.
What is the weight and thickness of the Intex Aqua Strong 5.1 Plus?
It weighs 150.6 grams and measures 143.10 × 73.10 × 10.10mm. At 10.1mm it is one of the slimmer budget phones in its category.
What expandable storage does the Intex Aqua Strong 5.1 Plus support?
It supports microSD cards up to 64GB in addition to its 8GB internal storage.
Does the Intex Aqua Strong 5.1 Plus have any sensors?
No. The Intex Aqua Strong 5.1 Plus has no listed sensors — no accelerometer, proximity sensor, gyroscope, ambient light sensor, compass or barometer. This means no auto-rotation, no auto-brightness and the screen will not turn off automatically during calls.
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