Unrouted count is now down to 543.

Route the rest of the camera circuit, add meanders to the clock and D1 diff pairs so that the skew between the clock and data-lines is 0 (still need to do intra-pair skew/phase), add the pull-up resistors to I2C3, add a 3V3_P filled zone around the whole board on the In3.Cu layer

Place and begin routing the camera, move the haptic motor to the "back" (side with the display) at a spot with its connector where there are no obstructions, move the slide switches to the "back-right" (front-left facing the display upright) and the ONOFF/volume buttons to the "front-left" (back-right facing the display upright)

Move the speaker's filter closer to the speaker, increase the speaker's trace widths to 0.8mm, do some minor adjustments to the USB diff pairs

Placed glue logic of M.2 card.

Update the micro-SIM slot footprint's keepout zone which was overlapping with the DSW2 pad and was generally the incorrect size/position

The rest of the footprint still needs to be double checked after finding this error.

Begin laying out the WWAN/BB antenna footprint, including its feedline dimensions and clearance area, add 3D models for the push button and slide switch

The return path for the antenna may have to have a 6.8nH Murata LQG15HN inductor installed on it (cutting the ground trace shorting the pads). The BoM was updated with the new components and everything was reannotated and updated (page 2's caps were out of order).

Move the mPCIe slot and the associated circuit 0.5mm to the right in order to make room for the BB antenna

Detected a confict between local net labels and hierarchical net labels
which resulted in level shifter U1801 completely bridged.

Renamed labels in schematic.

Route USB2 to the hub chip's upstream port and re-order & route each of the downstream ports to their respective locations (smartcard, mPCIe, & M.2), place and route the HDMI fuse, schottky diodes, TVS diodes, capacitors, and pull-up resistors, route the rest of the HDMI's interface to the SoM (HPD & I2C), adjust the GNSS antenna's CPW width using the PCB manufacturer's recommendation from their calculations

The HDMI circuit should be complete now. The GNSS & WiFi+BT antennae should also be complete. The GNSS module's RX & TX lines need to be routed next.

Add ANT-LTE-CER-T as the baseband modem antenna into the schematic and BoM, update the layout accordingly

Update the antennae footprints and feedline layout dimensions using the new stackup and relative permittivity given by the manufacturer, cut off the top corner of the speaker's pad #2 in order to make sure it does not hang off the top of the board

The GNSS CPW will likely be double checked by the manufacturer soon.

The diff pairs going to the NFETs are exactly matched to 0 with their phase/skew; 1V8P still needs to be brought to them.

Fence in the rest of the GNSS antenna area and fix the VBUS via array near the charge controller (now locked)

To be fixed: Accidently moved vias near U301 (by dragging/shoving other signal).

As this signal can carry a 25MHz square wave, a guard ring connected to GND was added.

Add stitching vias around the WiFi+BT antennae on the top-right section of the board, the vias form a fence-like structure and prevent interference in both directions

The rest of the path still needs to be stitched (around the GNSS antenna), and wrap around next to the earpiece speaker, which needed to be shifted slightly to the left. Once the proper via locations are determined between the speaker and the GNSS antenna area, the speaker can try to be placed as-close-as-possible to the horizontal-center of the board (at X=105mm).

The MHF4 spec sheet gives dimensions for a 50Ohm CPW coming from it, however this feedline is actually a microstrip line and therefore it should follow our specific width requirements (using our relative permittivity and top-to-bottom spacing). The width of the feedline will need to be adjusted once the permittivity between the top and bottom layer with the inner layers being void is given/known (at ~3GHz).

Shortened/straightened connection SD-card <-> SOM

Correct and complete the USB and HDMI serpentine bend skew/phase routing such that each diff pair is tuned/matched to 0mm. Place each of the tuning meanders at the correct corresponding locations by going down the line and setting each of the pairs' proceeding segment length to being an equal stub, checking the overall skew, making the correction near the problematic bend (so long as the next "correction" bend is >15mm away), and going down the entire line doing this.

Each of the diff pairs now have a 0mm intra-pair skew (with the exception of three very short USB-C pairs between the CMF&ESD IC and the receptacle) which still have a skew within the <1ps~=150um spec (is actually <100um).

Adjust the dimensions and move the placement of the serpentine bends to the recommended values & locations for the USB diff pairs and the HDMI CLK line

This same thing still needs to be applied to the other HDMI diff pairs.

Continue optimizing the HDMI diff pairs and use <2*Gap for the amplitude and <3*Width for the spacing on the USB serpentine routing

These same <2*Gap & <3*Width values still need to be applied to the HDMI diff pairs (along with placing the meander in the correct locations by deleting segments checking the length, and re-adding the segment).