Phone Comparison - Apple iPhone 4S vs Samsung I9506 Galaxy S4 vs Acer Liquid Zest
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| Manufacturer | Apple | Samsung | Acer |
| Announced | October 2011 | Q3 2013 | February 2016 |
| Status | Available - October 2011 | Available - Q3 2013 | Coming soon |
| Colors | Black, White | White Frost, Black Mist / Arctic Blue, Red Aurora | Black, White |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
115.2 x 58.6 x 9.3 mm (4.54 x 2.31 x 0.37 in) |
136.6 x 69.8 x 7.9 mm (5.38 x 2.75 x 0.31 in) |
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| Weight | 140 g (4.94 oz) | 130 g (4.59 oz) | - |
| 2G Network | GSM 850 / 900 / 1800 / 1900 CDMA2000 1xEV-DO |
GSM 850 / 900 / 1800 / 1900 CDMA2000 1xEV-DO |
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (optional) |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 1900 / 2100 HSDPA | HSDPA |
| 4G Network | - | LTE 800 / 850 / 900 / 1800 / 2100 / 2600 | LTE |
| Messaging | SMS, MMS, Push Mail, EMail, IM | SMS, MMS, EMail, IM | SMS, MMS, EMail, IM |
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| OS | iOS 5 | Android OS, v4.2.2 (Jelly Bean) | Android OS, v6.0 (Marshmallow) |
| Processor | 1 GHz dual-core ARM Cortex-A9 processor, Apple A5 chipset | Quad-core 2.3 GHz Krait 400, Qualcomm MSM8974 Snapdragon 800 | Quad-core 1.3 GHz - Z525 Quad-core 1.0 GHz - Z528, Mediatek MT6580 - Z525 Mediatek MT6735 - Z525 |
| GPU | PowerVR SGX543MP2 | Adreno 330 | Mali-400MP2 - Z525 Mali-T720MP2 - Z528 |
| RAM | 512 MB | 2 GB | N/A |
| Internal Memory | 16/32/64 GB storage | 16/32 GB | - |
| External Memory | No | microSD, up to 64 GB | microSD (dedicated slot) |
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| Type | LED-backlit IPS TFT | Super AMOLED capacitive touchscreen | IPS LCD capacitive touchscreen |
| Colors | capacitive touchscreen | 16M colors | 16M colors |
| Size | 3.5 inches | 5.0 inches | 5.0 inches |
| Resolution | 640 x 960 pixels (330 ppi) | 1080 x 1920 pixels (441 ppi) | 720 x 1280 pixels (294 ppi) |
| Screen-to-Body Ratio | 53.92% | 72.15% | - |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | No | No | - |
| Games | Downloadable, incl. motion-bas | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 8 MP, 3264x2448 pixels | 13 MP, 4128 x 3096 pixels | 8 MP, 3264 x 2448 pixels |
| Flash | LED flash | LED flash | LED flash |
| Features | Auto focus, Touch Focus, Geo-tagging, Face Detection, HDR | Auto focus, Dual Shot, Simultaneous HD Video And Image Recording, Geo-tagging, Touch Focus, Face And Smile Detection, Image Stabilization, HDR | Auto focus, f/2.0, Geo-tagging, Touch Focus, Face Detection, HDR, Panorama |
| Video | Yes, 1080p@30fps, LED video light, video stabilization, geo-tagging | Yes, 1080p@30fps, dual-video rec. | 1080p@30fps |
| Front Camera | Yes, VGA [Similar] | Yes, 2 MP,1080p@30fps, dual video call [Similar] | 5 MP [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSDPA, 14.4 Mbps; HSUPA, 5.8 Mbps | HSDPA, 42.2 Mbps; HSUPA, 5.76 Mbps; LTE, Cat4, 50 Mbps UL, 150 Mbps DL | HSPA, LTE |
| Bluetooth | Yes, v4.0 with A2DP | Yes, v4.0 with A2DP, EDR, LE | v4.0, A2DP |
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, DLNA, Wi-Fi Direct, Wi-Fi hotspot | Yes |
| USB | Yes, v2.0 | Yes, microUSB v2.0 (MHL 2), USB On-the-go, USB Host | microUSB v2.0 |
| GPS | Yes, with A-GPS support and GLONASS | Yes, with A-GPS support and GLONASS | Yes, with A-GPS |
| Browser | HTML (Safari) | HTML5 | HTML5 |
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| Call Records | 100 received, dialed and missed calls | Practically unlimited | Practically unlimited |
| Internal | 16/32/64 GB storage, 512 MB RAM | 16/32 GB, 2 GB RAM | - |
| Expandable Storage | No | microSD, up to 64 GB | microSD (dedicated slot) |
| USB OTG | - | Supported | - |
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| Fingerprint | |
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| Proximity Sensor | |
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| Accelerometer Sensor | |
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| NFC | |
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| Type | Standard battery, Li-Po | Li-Ion Battery | - |
| Capacity | 1432 mAh | 2600 mAh | 5000 mAh |
| Stand by | Up to 200 h (2G) Up to 200 h (3G) |
Up to 370 h (3G) | - |
| Talk Time | Up to 14 h (2G) Up to 8 h (3G) |
Up to 17 h (3G) | - |
