Mate 9 Pro is Huawei's flagship by now, so it is widely concerned in all aspects. Thanks to a wealth majesty providing this sample. The mainly difference between Mate 9 Pro and Mate 9 is the display screen. Mate 9 has a 5.5-inch IPS display, while Mate 9 has a 5.5-inch QHD AMOLED display. In addition, is there exists any difference in call quality?
Mate 9 Pro is also a dual-SIM-card dual-stand-by smartphone supporting all mainstream wireless network in China. However, compared with smartphones with Qualcomm Snapdragon 8xx series chipset, Mate 9 series' SIM2 slot only supports mainstream 3G and 2G wireless network. This problem may not disturb users years ago, but now 4G wireless network has been popular in China, users are requiring better network connection.
Just like Mate 9, Huawei Mate 9 Pro has lots settings about calls, including the most common and useful function in china -- Incoming Call Identify, noise reduction controlling, high resolution sampling and hand-free directional noise reduction. What worth mention is the hand-free directional noise reduction function, it can be switched on by touching the upper right icon when calling. This function is able to filter noise in front at hand-free mode in a specific range, for example, when we are driving, it could filter the wind and engine noise in front. Both Mate 9 Pro and Mate 9 has 4 microphones for sampling, while most common Android smartphones only have 2 microphones placed in the bottom and near the main camera. Although 2 microphones are enough for daily calls and recordings, more microphones help phones improve voice recognition sensitivity and noise sampling. By convention, the GSM network call quality test is under China Unicom, and VoLTE is under China Mobile TDD-LTE.
Earpiece Speaker Test
We place this cell phone indoor with normal signal, and set the call voice volume to maximum, then call 10010, which is China Unicom customer service hotline.
|Testing Item||Mate 9 Pro||vivo X9 Plus||Smartism M1L||Huawei Mate 9||vivo Xplay 6||iPhone 7 Plus||Huawei P9|
|Output Level of Earpiece,dB||-11.88||-13.40||-9.91||-8.48||-10.56||-8.06||-7.59|
Mate 9 Pro's earpiece output volume is lower than Mate 9's, but it does not affect the call experience, because when you are calling at the highest volume, press the upper volume button, the Mate 9 Pro will switch on laud mode, the output volume can be improved over 1.5dB.
Loud Speaker Test
Speaker test was undertaken indoors with ambient noise level at 40dB or less, we turn up the ringtone volume to its maximum, and then use a sound level meter to measure sound level at the distance of one meter from the phone.
|Testing Item||Mate9 Pro||vivo X9 Plus||Smartism M1L||Huawei Mate 9||vivo Xplay 6||iPhone 7 Plus||Huawei P9|
|In Camera Bag,dB||73.1||73.2||72.0||67.3||70.0||73.3||67.4|
Mate 9 Pro uses the earpiece speaker to provide stereo performance at a relatively low volume. When you put this phone in your pockets or bags, it will gain the volume automatically to avoid missing calls.
Noise Reduction Test
We place this phone indoors with ambient noise level at 32db or less, in the middle of the room, we use a human-like structure "handholding" the phone to send voice signal, and put surround speakers in a certain distance playing 5 kinds of simulating ambient noise at 6db SNR. Then we standardize the recording from this end, and run a specific program comparing this recording with raw speech recording and noise-speech mixed recording to get noise reduction level, SNR improvement and SNRI-to-NPLR difference quantitative result.
|Testing Item[GSM Hand Holding]||Noisy Crowd||Background Music||Pink Noise||Roadside||Voice|
|Total Noise Level Reduction,dB[Higher is Better]||44.8||41.4||48.1||46.7||37.5|
|SNR Improvement,dB[Higher is Better]||43.5||38.9||47.7||46.3||35.9|
|SNRI-to-NPLR difference,dB[-4 to 3]||-4.6||0.0||-6.3||-6.0||0.6|
|Testing Item[VoLTE Hand Holding]||Noisy Crowd||Background Music||Pink Noise||Roadside||Voice|
|Total Noise Level Reduction,dB[Higher is Better]||43.5||38.9||47.7||46.3||35.9|
|SNR Improvement,dB[Higher is Better]||29.3||26.1||31.3||31.3||24.8|
|SNRI-to-NPLR difference,dB[-4 to 3]||-6.5||-0.8||-8.8||-6.6||-0.2|
|Testing Item[Hand-Free Mode]||Noisy Crowd||Background Music||Pink Noise||Roadside||Voice|
|Total Noise Level Reduction,dB[Higher is Better]||24.0||21.8||34.1||35.0||17.7|
|SNR Improvement,dB[Higher is Better]||24.0||21.8||26.2||23.4||12.5|
|SNRI-to-NPLR difference,dB[-4 to 3]||-2.4||1.2||-5.7||-4.1||2.2|
|Testing Item[Hand-Free Mode, directional noise reduction]||Noisy Crowd||Background Music||Pink Noise||Roadside||Voice|
|Total Noise Level Reduction,dB[Higher is Better]||26.8||28.3||32.0||31.4||25.3|
|SNR Improvement,dB[Higher is Better]||19.0||19.3||22.3||21.4||15.6|
|SNRI-to-NPLR difference,dB[-4 to 3]||-3.9||-0.5||-6.4||-4.7||1.2|
We can see from the call recording wave graph that Mate 9 Pro has a similar performance with Mate 9, but the Pro version has a lower recording volume in hand-holding mode, results the SNRI-to-NPLR lower than -5dB in some noisy scenes, which means in such scenes the other end may not hear you that clear, and if you switch off noise reduction or switch on high resolution sampling cannot gain the recording volume.
The Mate 9 Pro keeps a high performance in hand-free mode. It has a high recording volume that helps the other end to hear clearly. The hand-free directional noise reduction does not affect quantity result significantly, but it still helps the daily performance, especially in a telephone conference. Mate 9 Pro's overall call performance is similar with Mate 9, but some setbacks occurs, we hope Huawei could fix those problems.