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Nexus 4 Battery Shot Reveals Potential Quality Issues

Nexus 4 Battery Shot Reveals Potential Quality Issues# PDA - 掌中宝

h*t2012-11-06 08:11

1 楼

【以下文字转载自 NextGeneration 讨论区】
发信人: hytt (荷叶田田), 信区: NextGeneration
标题: water proof sheet 推荐
发信站: BBS 未名空间站 (Tue Jul 17 10:33:05 2012, 美东)
因为娃处在过渡期；晚上尿尿基本没出过差错，可但是也不想水淹七军。自己对这个完
全没了解。娃和我们cosleep,queensize 的床。大家价钱质量都说一说;适合crib的也
说说，没准儿也用得上。谢谢了！

b*r2012-11-06 08:11

2 楼

http://www.xda-developers.com/android/nexus-4-battery-shot-reve
Several pictures of the LG-built Google Nexus 4 have been showing up across
the Internet. The featured image in this article really caught my eye
because it shows the internals of the device relatively well. While this
device has not yet been released, a lot can be said (and judged) about a
device’s hardware, even without full board shots. Overall, it appears to
show that LG’s build quality is considerably lower than that of the Samsung
Nexus devices in the past. In this article, I intend to write about the
design pros and cons of the highly anticipated Nexus 4.
Design Pluses
Large external speaker - One of the biggest complaints with Samsung’s
designs is the low powered/small sized speaker. While it delivers a trade-
off in battery life versus sound quality/quantity, the Nexus 4′s larger
speaker should suffice to produce adequate sound.
Good speaker placement - The speaker placement on the Nexus 4 places the
speaker at the corner of the device rather than the center, where your palm
blocks it in portrait mode. While the Galaxy Nexus forces you to hold the
device in an odd position to bounce sound from your palm to your ear while
in portrait mode, the Nexus 4 will not have this problem. The corner
orientation places the speaker in a optimal position for both landscape and
horizontal palm redirection while watching movies. This same orientation
can be seen on the Meizu MX.
Design Minuses
Bolted in battery - The defining line between “Operator Replaceable” and
“Qualified Service Technician” is the use of tools. The Nexus 4 not only
requires a screw driver, but the plastic tabs on the edges will break if
removed improperly. Once those tabs are broken, signal quality will be lost
from the connection with the Spring Antenna Connections.
Spring Antenna Connections - The problem with Spring Antenna Connections or
simply Spring Connections in general is: When tension is lost, signal is
lost. Loss of tension between the back plate and the board can occur when a
tab breaks or the back plate is warped. Warping of back plates can occur
easily, and is quite frequent as devices age from stress, dropping, impact,
or even a day in a hot car. You may notice some old devices such as remote
controls or phones will squeak and creek when you press on them. This noise
is generally attributed to warping or breakage of tabs, which would be
critical for the WiFi/NFC/data/GPS/Bluetooth connections on the Nexus 4.
Lack of impact zones - Many current devices including Samsung’s entire
lineup include impact areas around the bolts and the edge of the device.
This allows the device to sustain impact without altering the physical
structure of the board, causing components to come lose. The absence of
impact areas causes a device to be more fragile and less resistant to
impacts. This also increases a device’s warpage risk, which can alter
device dimensions and cause the Spring Connections to fail.
Tape used instead of structure and shielding - A well designed device will
use its own structure to hold components in place. Tape is a disposable part
. Disposable parts have no place inside of a properly designed device. The
disadvantage here is tape can take components off the board when removed.
Tape is also messy, and leaves residue on a board and other components.
There is never a situation when using tape instead of physical structure is
required, and the use of tape is often a harbinger for other build quality
problems.
Recommendations for next revision
Make the speaker grill bigger - A speaker grill is designed to keep the
operator’s fingers out, not to keep water out. The small size of the
speaker grill on the Nexus 4 will impede speaker sound and motion, and thus
the overall dB level. This physical obsturction means the speaker wastes
power on compression of air rather than audible sound creation.
Replace the battery tape - Instead of using tape for the battery, a slight
overhang at the bottom of the metalized battery section will suffice to keep
the battery from moving around inside the device. Another way is to place
glue or double-sided tape on the bottom of the battery.
Replace the communications tape - Instead of metalized tape on the
communications section of the board, use a physical shield cap, which makes
it serviceable and more tidy.
Use impact zones - Impact zones prolong device life.
Use a physical connector and a film substrate for the back cover - The back
cover of the device consists of several separate connections spread across
the entire device. This means warpage anywhere in that area can cause the
device to lose connectivity. The primary focus of a mobile device is
connectivity, and that should not be trusted to spring connections. The
spring connections should be replaced with a physical connector of some sort
. A physical connector would also save space.
Do not bolt down batteries - Batteries should be easily removable in the
event of a problem. Getting the rear cover off is enough work. The
compression method has been trusted across the spring connectors on the
board, which are held in place solely by pressure. A proper connector holds
itself in place. A slight bit of foam-rubber would do the same job as a
spring, save space, save tools and remove the need for “tools” when
replacing the battery.
Do not put the IMEI on the back cover – There will surely be aftermarket
accessories for the device or people who want to replace the back cover, or
add an extended battery. The IMEI should be on the board, or at least
bolted to the device.
At first glance, the Nexus 4′s hardware appears to be a quality downgrade
from the Galaxy nexus which we reviewed previously. After release we hope
to be able to give a much better analysis.

r*f2012-11-06 08:11

3 楼

俺们随便在target买个，好像10几块
crib mattress本身就是waterproof吧

【在 h**t 的大作中提到】

: 【以下文字转载自 NextGeneration 讨论区】
: 发信人: hytt (荷叶田田), 信区: NextGeneration
: 标题: water proof sheet 推荐
: 发信站: BBS 未名空间站 (Tue Jul 17 10:33:05 2012, 美东)
: 因为娃处在过渡期；晚上尿尿基本没出过差错，可但是也不想水淹七军。自己对这个完
: 全没了解。娃和我们cosleep,queensize 的床。大家价钱质量都说一说;适合crib的也
: 说说，没准儿也用得上。谢谢了！

C*d2012-11-06 08:11

4 楼

好吧，兴趣转投lumia 920

h*t2012-11-06 08:11

5 楼

谢拉！crib 那个确实是。。但目前cosleep还得买一个

【在 r*f 的大作中提到】

: 俺们随便在target买个，好像10几块
: crib mattress本身就是waterproof吧

a*n2012-11-06 08:11

6 楼

看来非常不经摔

across
Samsung

【在 b*******r 的大作中提到】

: http://www.xda-developers.com/android/nexus-4-battery-shot-reve
: Several pictures of the LG-built Google Nexus 4 have been showing up across
: the Internet. The featured image in this article really caught my eye
: because it shows the internals of the device relatively well. While this
: device has not yet been released, a lot can be said (and judged) about a
: device’s hardware, even without full board shots. Overall, it appears to
: show that LG’s build quality is considerably lower than that of the Samsung
: Nexus devices in the past. In this article, I intend to write about the
: design pros and cons of the highly anticipated Nexus 4.
: Design Pluses